17-gonal (or heptadecagonal) numbers: a(n) = n*(15*n-13)/2.

Terms

a(0) =0a(1) =1a(2) =17a(3) =48a(4) =94a(5) =155a(6) =231a(7) =322a(8) =428a(9) =549a(10) =685a(11) =836a(12) =1002a(13) =1183a(14) =1379a(15) =1590a(16) =1816a(17) =2057a(18) =2313a(19) =2584a(20) =2870a(21) =3171a(22) =3487a(23) =3818a(24) =4164a(25) =4525a(26) =4901a(27) =5292a(28) =5698a(29) =6119