Structured icosidodecahedral numbers.

Terms

a(0) =1a(1) =30a(2) =135a(3) =364a(4) =765a(5) =1386a(6) =2275a(7) =3480a(8) =5049a(9) =7030a(10) =9471a(11) =12420a(12) =15925a(13) =20034a(14) =24795a(15) =30256a(16) =36465a(17) =43470a(18) =51319a(19) =60060a(20) =69741a(21) =80410a(22) =92115a(23) =104904a(24) =118825a(25) =133926a(26) =150255a(27) =167860a(28) =186789a(29) =207090