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 1-2 of 2 results.

A088955 Primes of the form 60*n + 1.

Original entry on oeis.org

61, 181, 241, 421, 541, 601, 661, 1021, 1201, 1321, 1381, 1621, 1741, 1801, 1861, 2161, 2221, 2281, 2341, 2521, 3001, 3061, 3121, 3181, 3301, 3361, 3541, 4021, 4201, 4261, 4441, 4561, 4621, 4801, 4861, 5101, 5281, 5521, 5581, 5641, 5701, 5821, 5881
Offset: 1

Views

Author

Lekraj Beedassy, Dec 01 2003

Keywords

Crossrefs

Programs

Formula

a(n) = 60*A088958(n) + 1 = A000040(A090605(n)). - Ray Chandler, Dec 02 2003

Extensions

More terms from Ray Chandler, Dec 02 2003

A090605 Numbers m such that m-th prime is of the form 60*k+1.

Original entry on oeis.org

18, 42, 53, 82, 100, 110, 121, 172, 197, 216, 221, 257, 271, 279, 284, 326, 331, 339, 347, 369, 431, 438, 445, 450, 464, 474, 496, 556, 575, 585, 603, 618, 624, 647, 651, 682, 701, 730, 737, 741, 751, 764, 775, 798, 820, 829, 835, 841, 859, 873, 881, 894
Offset: 1

Views

Author

Ray Chandler, Dec 06 2003

Keywords

Comments

A088955 indexed by A000040.
The asymptotic density of this sequence is 1/16 (by Dirichlet's theorem). - Amiram Eldar, Mar 01 2021

Crossrefs

Programs

  • Mathematica
    Select[Range[900], Mod[Prime[#], 60] == 1 &] (* Amiram Eldar, Mar 01 2021 *)

Formula

a(n) = k such that A000040(k) = A088955(n) = 60*A088958(n)+1.
Showing 1-2 of 2 results.