Centered truncated octahedral numbers: the number of integer triples (x,y,z) such that max(|x|,|y|,|z|) <= 2n and |x|+|y|+|z| <= 3n.

A371515

Centered truncated octahedral numbers: the number of integer triples (x,y,z) such that max(|x|,|y|,|z|) <= 2n and |x|+|y|+|z| <= 3n.

Terms

    a(0) =1a(1) =57a(2) =341a(3) =1045a(4) =2361a(5) =4481a(6) =7597a(7) =11901a(8) =17585a(9) =24841a(10) =33861a(11) =44837a(12) =57961a(13) =73425a(14) =91421a(15) =112141a(16) =135777a(17) =162521a(18) =192565a(19) =226101a(20) =263321a(21) =304417a(22) =349581a(23) =399005a(24) =452881a(25) =511401a(26) =574757a(27) =643141a(28) =716745a(29) =795761

External references