cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Previous Showing 11-18 of 18 results.

A366208 Numbers whose median of the digits is equal to 2.

Original entry on oeis.org

2, 13, 22, 31, 40, 122, 123, 124, 125, 126, 127, 128, 129, 132, 142, 152, 162, 172, 182, 192, 202, 203, 204, 205, 206, 207, 208, 209, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 240, 241, 242, 250, 251
Offset: 1

Views

Author

Stefano Spezia, Oct 04 2023

Keywords

Examples

			13 is a term since the median of the digits 1 and 3 is (1+3)/2 = 2;
122 is a term since the median of the digits 1, 2, and 2 is 2.

Crossrefs

Cf. A292730 (median = 0), A292739 (median = 9), A366207 (median = 1), A366209 (median = 3), A366210 (median = 4), A366211 (median = 5), A366212 (median = 6), A366213 (median = 7), A366214 (median = 8).

Programs

  • Mathematica
    Select[Range[0,251], Median[IntegerDigits[#]]==2&]

A366209 Numbers whose median of the digits is equal to 3.

Original entry on oeis.org

3, 15, 24, 33, 42, 51, 60, 133, 134, 135, 136, 137, 138, 139, 143, 153, 163, 173, 183, 193, 233, 234, 235, 236, 237, 238, 239, 243, 253, 263, 273, 283, 293, 303, 304, 305, 306, 307, 308, 309, 313, 314, 315, 316, 317, 318, 319, 323, 324, 325, 326, 327, 328, 329, 330
Offset: 1

Views

Author

Stefano Spezia, Oct 04 2023

Keywords

Examples

			15 is a term since the median of the digits 1 and 5 is (1+5)/2 = 3;
133 is a term since the median of the digits 1, 3, and 3 is 3.

Crossrefs

Cf. A292730 (median = 0), A292739 (median = 9), A366207 (median = 1), A366208 (median = 2), A366210 (median = 4), A366211 (median = 5), A366212 (median = 6), A366213 (median = 7), A366214 (median = 8).

Programs

  • Mathematica
    Select[Range[0,330], Median[IntegerDigits[#]]==3&]

A366210 Numbers whose median of the digits is equal to 4.

Original entry on oeis.org

4, 17, 26, 35, 44, 53, 62, 71, 80, 144, 145, 146, 147, 148, 149, 154, 164, 174, 184, 194, 244, 245, 246, 247, 248, 249, 254, 264, 274, 284, 294, 344, 345, 346, 347, 348, 349, 354, 364, 374, 384, 394, 404, 405, 406, 407, 408, 409, 414, 415, 416, 417, 418, 419, 424, 425
Offset: 1

Views

Author

Stefano Spezia, Oct 04 2023

Keywords

Examples

			17 is a term since the median of the digits 1 and 7 is (1+7)/2 = 4;
144 is a term since the median of the digits 1, 4, and 4 is 4.

Crossrefs

Cf. A292730 (median = 0), A292739 (median = 9), A366207 (median = 1), A366208 (median = 2), A366209 (median = 3), A366211 (median = 5), A366212 (median = 6), A366213 (median = 7), A366214 (median = 8).

Programs

  • Mathematica
    Select[Range[0,425], Median[IntegerDigits[#]]==4&]

A366211 Numbers whose median of the digits is equal to 5.

Original entry on oeis.org

5, 19, 28, 37, 46, 55, 64, 73, 82, 91, 155, 156, 157, 158, 159, 165, 175, 185, 195, 255, 256, 257, 258, 259, 265, 275, 285, 295, 355, 356, 357, 358, 359, 365, 375, 385, 395, 455, 456, 457, 458, 459, 465, 475, 485, 495, 505, 506, 507, 508, 509, 515, 516, 517, 518, 519, 525
Offset: 1

Views

Author

Stefano Spezia, Oct 04 2023

Keywords

Examples

			19 is a term since the median of the digits 1 and 9 is (1+9)/2 = 5;
155 is a term since the median of the digits 1, 5, and 5 is 5.

Crossrefs

Cf. A292730 (median = 0), A292739 (median = 9), A366207 (median = 1), A366208 (median = 2), A366209 (median = 3), A366210 (median = 4), A366212 (median = 6), A366213 (median = 7), A366214 (median = 8).

Programs

  • Mathematica
    Select[Range[0,525], Median[IntegerDigits[#]]==5&]

A366212 Numbers whose median of the digits is equal to 6.

Original entry on oeis.org

6, 39, 48, 57, 66, 75, 84, 93, 166, 167, 168, 169, 176, 186, 196, 266, 267, 268, 269, 276, 286, 296, 366, 367, 368, 369, 376, 386, 396, 466, 467, 468, 469, 476, 486, 496, 566, 567, 568, 569, 576, 586, 596, 606, 607, 608, 609, 616, 617, 618, 619, 626, 627, 628, 629
Offset: 1

Views

Author

Stefano Spezia, Oct 04 2023

Keywords

Examples

			39 is a term since the median of the digits 3 and 9 is (3+9)/2 = 6;
166 is a term since the median of the digits 1, 6, and 6 is 6.

Crossrefs

Cf. A292730 (median = 0), A292739 (median = 9), A366207 (median = 1), A366208 (median = 2), A366209 (median = 3), A366210 (median = 4), A366211 (median = 5), A366213 (median = 7), A366214 (median = 8).

Programs

  • Mathematica
    Select[Range[0,630], Median[IntegerDigits[#]]==6&]

A366213 Numbers whose median of the digits is equal to 7.

Original entry on oeis.org

7, 59, 68, 77, 86, 95, 177, 178, 179, 187, 197, 277, 278, 279, 287, 297, 377, 378, 379, 387, 397, 477, 478, 479, 487, 497, 577, 578, 579, 587, 597, 677, 678, 679, 687, 697, 707, 708, 709, 717, 718, 719, 727, 728, 729, 737, 738, 739, 747, 748, 749, 757, 758, 759
Offset: 1

Views

Author

Stefano Spezia, Oct 04 2023

Keywords

Examples

			59 is a term since the median of the digits 5 and 9 is (5+9)/2 = 7;
177 is a term since the median of the digits 1, 7, and 7 is 7.

Crossrefs

Cf. A292730 (median = 0), A292739 (median = 9), A366207 (median = 1), A366208 (median = 2), A366209 (median = 3), A366210 (median = 4), A366211 (median = 5), A366212 (median = 6), A366214 (median = 8).

Programs

  • Mathematica
    Select[Range[0,760], Median[IntegerDigits[#]]==7&]

A366214 Numbers whose median of the digits is equal to 8.

Original entry on oeis.org

8, 79, 88, 97, 188, 189, 198, 288, 289, 298, 388, 389, 398, 488, 489, 498, 588, 589, 598, 688, 689, 698, 788, 789, 798, 808, 809, 818, 819, 828, 829, 838, 839, 848, 849, 858, 859, 868, 869, 878, 879, 880, 881, 882, 883, 884, 885, 886, 887, 888, 889, 890, 891, 892
Offset: 1

Views

Author

Stefano Spezia, Oct 04 2023

Keywords

Examples

			79 is a term since the median of the digits 7 and 9 is (7+9)/2 = 8;
188 is a term since the median of the digits 1, 8, and 8 is 8.

Crossrefs

Cf. A292730 (median = 0), A292739 (median = 9), A366207 (median = 1), A366208 (median = 2), A366209 (median = 3), A366210 (median = 4), A366211 (median = 5), A366212 (median = 6), A366213 (median = 7).

Programs

  • Mathematica
    Select[Range[0,892], Median[IntegerDigits[#]]==8&]

A378560 Numbers with the median of the digits equal to one of the digits.

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140
Offset: 1

Views

Author

Stefano Spezia, Nov 30 2024

Keywords

Examples

			10 is not in the list because the median of its digits is not integer.
13 is not in the list because the median of its digits is 2 which is not a digit of 13.
113 is in the list because the median of its digits is 1 which is a digit of 113.

Links

Crossrefs

Cf. A001633 (subsequence), A175688, A378564.
Cf. A292730, A292739, A366207, A366208, A366209, A366210, A366211, A366212, A366213, A366214.

Programs

  • Mathematica
    Select[Range[0,140],MemberQ[digits=IntegerDigits[#],Median[digits]] &]
Previous Showing 11-18 of 18 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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