8-dimensional centered tetrahedral numbers.

Terms

a(0) =1a(1) =10a(2) =55a(3) =220a(4) =715a(5) =2002a(6) =5005a(7) =11440a(8) =24310a(9) =48619a(10) =92368a(11) =167905a(12) =293710a(13) =496705a(14) =815188a(15) =1302499a(16) =2031535a(17) =3100240a(18) =4638205a(19) =6814522a(20) =9847045a(21) =14013220a(22) =19662655a(23) =27231610a(24) =37259596