A331004 a(n) is the real part of f(n) (as defined in A330780).

0, 2, 4, 2, -2, -6, -9, -6, 0, 6, 9, 6, 0, -8, -11, -8, 0, 8, 12, 8, 0, -8, -12, -7, 1, 9, 13, 9, 1, -7, -12, -8, 0, 10, 15, 10, 0, -10, -15, -10, 2, 12, 17, 12, 2, -10, -15, -10, 0, 10, 15, 10, -2, -12, -17, -12, -2, 8, 14, 9, -3, -15, -21, -15, -3, 9, 15, 8

Offset

0,2

Links

Rémy Sigrist, Table of n, a(n) for n = 0..10000

Rémy Sigrist, PARI program for A331004

Prog

(PARI) See Links section.

Crossrefs

Cf. A330780.

Sequence in context: A258751 A280233 A279902 * A278540 A280161 A280124

Adjacent sequences: A331001 A331002 A331003 * A331005 A331006 A331007

Keyword

sign

Author

Rémy Sigrist, Jan 05 2020

Status

approved