A145395 Complement of the primes of form 4k+3 (A002145).

0, 1, 2, 4, 5, 6, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 68, 69, 70, 72, 73, 74, 75, 76, 77, 78, 80, 81, 82, 84

Offset

1,3

Comments

Numbers n >= 0 such that (n + 1)*(2*r + n)/2 is a cube for some r >= 1. - Ctibor O. Zizka, Dec 28 2024

Links

Table of n, a(n) for n=1..72.

Formula

A079261(a(n)) = 0.

Crossrefs

Cf. A002145, A039268, A079261.

Sequence in context: A187480 A081694 A355890 * A049692 A047839 A285601

Adjacent sequences: A145392 A145393 A145394 * A145396 A145397 A145398

Keyword

nonn

Author

Reinhard Zumkeller, Oct 12 2008

Status

approved