A079392 Numbers n such that A000594(n) > 0 (Ramanujan's tau function is positive).

1, 3, 5, 8, 11, 14, 15, 16, 18, 19, 23, 24, 26, 28, 29, 33, 34, 36, 40, 41, 42, 47, 48, 50, 52, 54, 55, 57, 61, 62, 63, 64, 68, 69, 70, 71, 73, 74, 78, 79, 80, 81, 84, 86, 87, 88, 90, 91, 95, 97, 98, 100, 101, 102, 106, 107, 108, 109, 115, 117, 118, 119, 120, 121

Offset

1,2

Links

Seiichi Manyama, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Tau Function

Example

A000594(1)=1, therefore a(1)=1.

Prog

(PARI) T(n)=n*(n+1)/2 rtau3(n)=local(y, j); y=0; j=1; while (T(j-1)<n, j++); j--; for (i=1, j, y=y-(-1)^i*(2*i-1)*x^(T(i-1))); y=y^8; polcoeff(y, n-1) for (n=1, 100, if (rtau3(n)>0, print1(n", ")))

Crossrefs

Cf. A079393, A000594.

Sequence in context: A008576 A047622 A240603 * A185723 A022852 A180124

Adjacent sequences: A079389 A079390 A079391 * A079393 A079394 A079395

Keyword

nonn

Author

Jon Perry, Jan 06 2003

Extensions

More terms from Seiichi Manyama, Sep 10 2017

Status

approved