Thickened cube numbers: a(n) = n*(n^2 + (n-1)^2) + (n-1)*2*n*(n-1).

Terms

a(0) =1a(1) =14a(2) =63a(3) =172a(4) =365a(5) =666a(6) =1099a(7) =1688a(8) =2457a(9) =3430a(10) =4631a(11) =6084a(12) =7813a(13) =9842a(14) =12195a(15) =14896a(16) =17969a(17) =21438a(18) =25327a(19) =29660a(20) =34461a(21) =39754a(22) =45563a(23) =51912a(24) =58825a(25) =66326a(26) =74439a(27) =83188a(28) =92597a(29) =102690