Cupolar numbers: a(n) = (n+1)*(5*n^2 + 7*n + 3)/3.

Terms

a(0) =1a(1) =10a(2) =37a(3) =92a(4) =185a(5) =326a(6) =525a(7) =792a(8) =1137a(9) =1570a(10) =2101a(11) =2740a(12) =3497a(13) =4382a(14) =5405a(15) =6576a(16) =7905a(17) =9402a(18) =11077a(19) =12940a(20) =15001a(21) =17270a(22) =19757a(23) =22472a(24) =25425a(25) =28626a(26) =32085a(27) =35812a(28) =39817a(29) =44110