A277025 n for which A277023(4n) is square, thus A277024(4n) is zero.

0, 1, 2, 3, 4, 5, 6, 9, 10, 12, 14, 15, 17, 18, 20, 21, 23, 24, 26, 28, 30, 31, 33, 34, 35, 36, 37, 39, 40, 41, 42, 44, 45, 48, 51, 52, 54, 55, 56, 57, 58, 60, 63, 66, 68, 69, 70, 71, 72, 74, 78, 80, 81, 84, 88, 90, 91, 93, 95, 96, 98, 99, 102, 105, 107, 108, 110, 111, 112, 114, 117, 118, 120, 121, 123, 126, 129, 131

Offset

0,3

Comments

Indexing starts from zero because a(0)=0 is a special case in this sequence.

Links

Antti Karttunen, Table of n, a(n) for n = 0..120

Prog

(Scheme, with Antti Karttunen's IntSeq-library)
(define A277025 (ZERO-POS 0 0 (lambda (n) (A277024 (* 4 n)))))

Crossrefs

Complement: A277026.

Cf. A002828, A277015, A277016, A277024.

Sequence in context: A093703 A117073 A063952 * A208982 A018710 A018509

Adjacent sequences: A277022 A277023 A277024 * A277026 A277027 A277028

Keyword

nonn

Author

Antti Karttunen, Oct 03 2016

Status

approved