A324047 a(n) = A000203(n) - A106316(n).

1, 2, 2, 6, 2, 12, 2, 13, 12, 14, 2, 24, 2, 16, 12, 29, 2, 27, 2, 26, 12, 20, 2, 48, 18, 22, 39, 56, 2, 48, 2, 60, 45, 26, 39, 76, 2, 28, 51, 80, 2, 90, 2, 72, 42, 32, 2, 112, 24, 72, 63, 80, 2, 102, 68, 88, 69, 38, 2, 120, 2, 40, 101, 124, 76, 114, 2, 96, 81, 86, 2, 183, 2, 46, 121, 104, 76, 126, 2, 130, 79, 50, 2, 196, 92, 52

Offset

1,2

Links

Antti Karttunen, Table of n, a(n) for n = 1..20000

Formula

a(n) = A000203(n) - A106316(n).

Prog

(PARI)
A106315(n) = (n*numdiv(n) % sigma(n));
A106316(n) = (A106315(n) % n);
A324047(n) = (sigma(n) - A106316(n));

Crossrefs

Cf. A000005, A000203, A106315, A106316, A324045, A324046.

Sequence in context: A264666 A283362 A337524 * A091818 A324202 A278240

Adjacent sequences: A324044 A324045 A324046 * A324048 A324049 A324050

Keyword

nonn

Author

Antti Karttunen, Feb 13 2019

Status

approved