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.

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A035032 For n >= 6, max( prevprime(n), 2*prevprime(floor(n/2))).

Original entry on oeis.org

1, 2, 2, 3, 3, 5, 5, 7, 7, 7, 7, 11, 11, 13, 13, 14, 14, 17, 17, 19, 19, 19, 19, 23, 23, 23, 23, 26, 26, 29, 29, 31, 31, 31, 31, 34, 34, 37, 37, 38, 38, 41, 41, 43, 43, 43, 43, 47, 47, 47, 47, 47, 47, 53, 53, 53, 53, 53
Offset: 1

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Keywords

References

  • S. K. Stein and S. Szabo, Algebra and Tiling, MAA Carus Monograph 25, 1994, page 104.

Crossrefs

Cf. A035031.

Programs

  • Mathematica
    Join[{1,2,2,3,3},Table[Max[NextPrime[n,-1],2*NextPrime[Floor[n/2],-1]],{n,6,60}]] (* Harvey P. Dale, Jul 21 2025 *)
Showing 1-1 of 1 results.