Structured octagonal anti-prism numbers.

Terms

a(0) =1a(1) =16a(2) =64a(3) =164a(4) =335a(5) =596a(6) =966a(7) =1464a(8) =2109a(9) =2920a(10) =3916a(11) =5116a(12) =6539a(13) =8204a(14) =10130a(15) =12336a(16) =14841a(17) =17664a(18) =20824a(19) =24340a(20) =28231a(21) =32516a(22) =37214a(23) =42344a(24) =47925a(25) =53976a(26) =60516a(27) =67564a(28) =75139a(29) =83260