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.

A332213 Fully multiplicative with a(p) = A332210(A000720(p)).

Original entry on oeis.org

1, 2, 3, 4, 7, 6, 5, 8, 9, 14, 13, 12, 19, 10, 21, 16, 23, 18, 29, 28, 15, 26, 31, 24, 49, 38, 27, 20, 37, 42, 11, 32, 39, 46, 35, 36, 43, 58, 57, 56, 47, 30, 53, 52, 63, 62, 61, 48, 25, 98, 69, 76, 71, 54, 91, 40, 87, 74, 73, 84, 79, 22, 45, 64, 133, 78, 83, 92, 93, 70, 89, 72, 97, 86, 147, 116, 65, 114, 101, 112, 81, 94, 103, 60, 161, 106, 111
Offset: 1

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Author

Antti Karttunen, Feb 09 2020

Keywords

Crossrefs

Cf. A000043, A000668, A000720, A332210, A332212 (inverse permutation), A332215.

Programs

  • PARI
    \\ Needs also code from A332210:
    A332213(n) = { my(f=factor(n)); f[,1] = apply(A332210,apply(primepi,f[,1])); factorback(f); };

Formula

a(1) = 1, a(p^e) = A332210(A000720(p))^e, a(m*n) = a(m)*a(n).