a(n) is the number of integer triples (x,y,z) satisfying a system of linear inequalities and congruences specified in the comments.

A370349

a(n) is the number of integer triples (x,y,z) satisfying a system of linear inequalities and congruences specified in the comments.

Terms

    a(0) =1a(1) =6a(2) =18a(3) =39a(4) =72a(5) =120a(6) =185a(7) =270a(8) =378a(9) =511a(10) =672a(11) =864a(12) =1089a(13) =1350a(14) =1650a(15) =1991a(16) =2376a(17) =2808a(18) =3289a(19) =3822a(20) =4410a(21) =5055a(22) =5760a(23) =6528a(24) =7361a(25) =8262a(26) =9234a(27) =10279a(28) =11400a(29) =12600

External references