A295822 Number of coprime pairs (a,b) with -n <= a <= n, -3 <= b <= 3.

2, 16, 24, 32, 40, 52, 56, 68, 76, 84, 92, 104, 108, 120, 128, 136, 144, 156, 160, 172, 180, 188, 196, 208, 212, 224, 232, 240, 248, 260, 264, 276, 284, 292, 300, 312, 316, 328, 336, 344, 352, 364, 368, 380, 388, 396, 404, 416, 420, 432, 440, 448, 456, 468

Offset

0,1

Links

Table of n, a(n) for n=0..53.

Crossrefs

Column k=3 of A295782.

Cf. A137243.

Sequence in context: A228158 A330662 A337426 * A212765 A343839 A019317

Adjacent sequences: A295819 A295820 A295821 * A295823 A295824 A295825

Keyword

nonn

Author

Seiichi Manyama, Nov 28 2017

Status

approved