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A331004
a(n) is the real part of f(n) (as defined in A330780).
2
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
PROG
(PARI) See Links section.
CROSSREFS
Cf. A330780.
Sequence in context: A258751 A280233 A279902 * A278540 A280161 A280124
KEYWORD
sign
AUTHOR
Rémy Sigrist, Jan 05 2020
STATUS
approved