A324057 a(n) = A106315(A005940(1+n)).

0, 1, 2, 5, 4, 0, 1, 2, 6, 4, 12, 16, 13, 30, 28, 18, 10, 8, 20, 36, 44, 24, 36, 12, 33, 21, 78, 51, 32, 72, 42, 3, 12, 16, 36, 0, 4, 48, 66, 50, 20, 128, 72, 48, 58, 144, 120, 108, 97, 75, 198, 32, 102, 312, 10, 84, 172, 128, 504, 176, 1, 168, 2, 67, 16, 20, 44, 12, 8, 96, 126, 88, 28, 16, 168, 112, 162, 264, 232, 56, 68, 80, 312, 0, 200, 480, 36, 120

Offset

0,3

Links

Antti Karttunen, Table of n, a(n) for n = 0..8191

Antti Karttunen, Data supplement: n, a(n) computed for n = 0..70327

Formula

a(n) = A106315(A005940(1+n)).

a(n) = A005940(1+n)*A106737(n) mod A324054(n).

Prog

(PARI)
A005940(n) = { my(p=2, t=1); n--; until(!n\=2, if((n%2), (t*=p), p=nextprime(p+1))); t }; \\ From A005940
A106315(n) = (n*numdiv(n) % sigma(n));
A324057(n) = A106315(A005940(1+n));

Crossrefs

Cf. A005940, A106737, A106315, A324054, A324055, A324058.

Sequence in context: A307126 A191474 A199602 * A106315 A285295 A217563

Adjacent sequences: A324054 A324055 A324056 * A324058 A324059 A324060

Keyword

nonn

Author

Antti Karttunen, Feb 14 2019

Status

approved