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Number of coprime pairs (a,b) with -n <= a <= n, -3 <= b <= 3.
1

%I #8 Nov 28 2017 10:26:59

%S 2,16,24,32,40,52,56,68,76,84,92,104,108,120,128,136,144,156,160,172,

%T 180,188,196,208,212,224,232,240,248,260,264,276,284,292,300,312,316,

%U 328,336,344,352,364,368,380,388,396,404,416,420,432,440,448,456,468

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

%Y Column k=3 of A295782.

%Y Cf. A137243.

%K nonn

%O 0,1

%A _Seiichi Manyama_, Nov 28 2017