Structured pentagonal icositetrahedral numbers (vertex structure 13).

Terms

a(0) =1a(1) =38a(2) =171a(3) =460a(4) =965a(5) =1746a(6) =2863a(7) =4376a(8) =6345a(9) =8830a(10) =11891a(11) =15588a(12) =19981a(13) =25130a(14) =31095a(15) =37936a(16) =45713a(17) =54486a(18) =64315a(19) =75260a(20) =87381a(21) =100738a(22) =115391a(23) =131400a(24) =148825a(25) =167726a(26) =188163a(27) =210196a(28) =233885a(29) =259290