11 times pentagonal numbers: 11*n*(3n-1)/2.

Terms

a(0) =0a(1) =11a(2) =55a(3) =132a(4) =242a(5) =385a(6) =561a(7) =770a(8) =1012a(9) =1287a(10) =1595a(11) =1936a(12) =2310a(13) =2717a(14) =3157a(15) =3630a(16) =4136a(17) =4675a(18) =5247a(19) =5852a(20) =6490a(21) =7161a(22) =7865a(23) =8602a(24) =9372a(25) =10175a(26) =11011a(27) =11880a(28) =12782a(29) =13717