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 1-5 of 5 results.

A054796 Numbers of form 17+n^2+n or 17+2*n^2.

Original entry on oeis.org

17, 19, 23, 25, 29, 35, 37, 47, 49, 59, 67, 73, 89, 107, 115, 127, 145, 149, 173, 179, 199, 217, 227, 257, 259, 289, 305, 323, 355, 359, 397, 409, 437, 467, 479, 523, 529, 569, 595, 617, 665, 667, 719, 739, 773, 817, 829, 887, 899, 947, 985, 1009, 1073
Offset: 1

Views

Author

Stuart M. Ellerstein (ellerstein(AT)aol.com), Apr 27 2000

Keywords

Links

Crossrefs

A052293.

Programs

  • Mathematica
    Module[{upto=410000},Select[Flatten[Table[{17+n^2+n,17+2n^2},{n,0, Ceiling[ (Sqrt[4*upto-67]-1)/2]}]]//Union,#<=upto&]] (* Harvey P. Dale, Oct 22 2016 *)

Extensions

More terms from James Sellers, Apr 28 2000

A054794 Numbers of form 5+n^2+n or 5+2*n^2.

Original entry on oeis.org

5, 7, 11, 13, 17, 23, 25, 35, 37, 47, 55, 61, 77, 95, 103, 115, 133, 137, 161, 167, 187, 205, 215, 245, 247, 277, 293, 311, 343, 347, 385, 397, 425, 455, 467, 511, 517, 557, 583, 605, 653, 655, 707, 727, 761, 805, 817, 875, 887, 935, 973, 997, 1061, 1063
Offset: 1

Views

Author

Stuart M. Ellerstein (ellerstein(AT)aol.com), Apr 27 2000

Keywords

Crossrefs

Cf. A052293, A054795, A054796.

Programs

  • Mathematica
    Flatten[Table[{n^2+n+5,2n^2+5},{n,0,40}]]//Union (* Harvey P. Dale, Jun 26 2025 *)

Extensions

More terms from James Sellers, Apr 28 2000

A054056 Numbers of form 29+n^2+n or 29+2*n^2.

Original entry on oeis.org

29, 31, 35, 37, 41, 47, 49, 59, 61, 71, 79, 85, 101, 119, 127, 139, 157, 161, 185, 191, 211, 229, 239, 269, 271, 301, 317, 335, 367, 371, 409, 421, 449, 479, 491, 535, 541, 581, 607, 629, 677, 679, 731, 751, 785, 829, 841, 899, 911, 959, 997, 1021, 1085
Offset: 1

Views

Author

Stuart M. Ellerstein (ellerstein(AT)aol.com), Apr 28 2000

Keywords

Examples

			29 + 30 = 59 and 29 + 32 = 61

Crossrefs

Cf. A052293 etc.

Programs

  • Mathematica
    With[{nn=60},Take[Union[Flatten[Table[{n^2+n+29,2n^2+29},{n,0,nn}]]], nn]] (* Harvey P. Dale, May 28 2014 *)

Extensions

More terms from James Sellers, Apr 30 2000

A054795 Numbers of form 23+n^2+n or 23+2*n^2.

Original entry on oeis.org

23, 25, 29, 31, 35, 41, 43, 53, 55, 65, 73, 79, 95, 113, 121, 133, 151, 155, 179, 185, 205, 223, 233, 263, 265, 295, 311, 329, 361, 365, 403, 415, 443, 473, 485, 529, 535, 575, 601, 623, 671, 673, 725, 745, 779, 823, 835, 893, 905, 953, 991, 1015, 1079
Offset: 1

Views

Author

Stuart M. Ellerstein (ellerstein(AT)aol.com), Apr 27 2000

Keywords

Crossrefs

Cf. A052293, A054794, A054796.

Extensions

More terms from James Sellers, Apr 28 2000

A054057 Numbers of form 41+n^2+n or 41+2*n^2.

Original entry on oeis.org

41, 43, 47, 49, 53, 59, 61, 71, 73, 83, 91, 97, 113, 131, 139, 151, 169, 173, 197, 203, 223, 241, 251, 281, 283, 313, 329, 347, 379, 383, 421, 433, 461, 491, 503, 547, 553, 593, 619, 641, 689, 691, 743, 763, 797, 841, 853, 911, 923, 971, 1009, 1033, 1097
Offset: 1

Views

Author

Stuart M. Ellerstein (ellerstein(AT)aol.com), Apr 28 2000

Keywords

Examples

			41 + 18 =59 and 41 + 20 =61

Crossrefs

Cf. A052293, A054056.

Programs

  • Mathematica
    With[{nn=60},Take[Flatten[Table[{41+n^2+n , 41+2n^2},{n,0,nn}]]//Union,nn]] (* Harvey P. Dale, Aug 03 2017 *)

Extensions

More terms from James Sellers, Apr 30 2000
Showing 1-5 of 5 results.

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