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

Author

Rémy Sigrist, Jan 05 2020

Keywords

• sign

Links

• Rémy Sigrist, Table of n, a(n) for n = 0..10000
• Rémy Sigrist, PARI program for A331004

Crossrefs

Cf. A330780.

Programs

PARI

See Links section.