50-gonal numbers: a(n) = 48*n*(n-1)/2 + n.

Terms

a(0) =0a(1) =1a(2) =50a(3) =147a(4) =292a(5) =485a(6) =726a(7) =1015a(8) =1352a(9) =1737a(10) =2170a(11) =2651a(12) =3180a(13) =3757a(14) =4382a(15) =5055a(16) =5776a(17) =6545a(18) =7362a(19) =8227a(20) =9140a(21) =10101a(22) =11110a(23) =12167a(24) =13272a(25) =14425a(26) =15626a(27) =16875a(28) =18172a(29) =19517