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.

Showing 1-4 of 4 results.

A114393 Square roots of A114392.

Original entry on oeis.org

1, 2, 5, 4, 10, 9, 8, 20, 18, 17, 16, 40, 41, 36, 34, 33, 32, 80, 82, 72, 68, 66, 65, 64, 160, 164, 144, 145, 136, 132, 130, 129, 128, 325, 320, 328, 288, 290, 272, 264, 260, 258, 257, 256, 650, 645, 640, 656, 576, 580, 544, 545, 528, 520, 516, 514, 513, 512
Offset: 1

Views

Author

Antti Karttunen, Feb 07 2006

Keywords

Crossrefs

A114392(n) = a(n)^2.

A114390 a(n) = A065621(n^2).

Original entry on oeis.org

1, 4, 25, 16, 41, 100, 81, 64, 241, 164, 137, 400, 505, 324, 289, 256, 865, 964, 953, 656, 713, 548, 1585, 1600, 1681, 2020, 1897, 1296, 1497, 1156, 1089, 1024, 3265, 3460, 3417, 3856, 4073, 3812, 3601, 2624, 2993, 2852, 2377, 2192, 2105, 6340
Offset: 1

Views

Author

Antti Karttunen, Feb 07 2006

Keywords

Crossrefs

Cf. A000290, A065621.
A114391 gives the positions where a(n) is square, A114392 gives the corresponding values (squares) and A114393 gives their square roots.

Programs

Formula

a(n) = A065621(A000290(n)).

A114391 Positions where A114390 is a square.

Original entry on oeis.org

1, 2, 3, 4, 6, 7, 8, 12, 14, 15, 16, 24, 25, 28, 30, 31, 32, 48, 50, 56, 60, 62, 63, 64, 96, 100, 112, 113, 120, 124, 126, 127, 128, 189, 192, 200, 224, 226, 240, 248, 252, 254, 255, 256, 378, 381, 384, 400, 448, 452, 480, 481, 496, 504, 508, 510, 511, 512, 756
Offset: 1

Views

Author

Antti Karttunen, Feb 07 2006

Keywords

Crossrefs

A114392 gives the corresponding values. Differs from A077436 (and A023758) for the first time at n=13, where a(13)=25, while A077436(13)=28. First differences: A114394.

A114384 Integers i such that 49*i = 81 X i.

Original entry on oeis.org

0, 21, 42, 63, 84, 85, 126, 127, 168, 170, 189, 191, 252, 253, 254, 255, 336, 340, 341, 378, 382, 383, 504, 506, 508, 509, 510, 511, 672, 680, 682, 693, 701, 703, 756, 757, 764, 765, 766, 767, 1008, 1012, 1013, 1016, 1018, 1020, 1021, 1022, 1023, 1344
Offset: 0

Views

Author

Antti Karttunen, Feb 07 2006

Keywords

Comments

Here * stands for ordinary multiplication and X means carryless (GF(2)[X]) multiplication (A048720).

Links

Crossrefs

Row 49 of A115872. A114385 shows this sequence in binary. Cf. A114392.
Showing 1-4 of 4 results.

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

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