Numbers n such that 8*n-1 is a triangular number.

Terms

a(0) =2a(1) =7a(2) =29a(3) =44a(4) =88a(5) =113a(6) =179a(7) =214a(8) =302a(9) =347a(10) =457a(11) =512a(12) =644a(13) =709a(14) =863a(15) =938a(16) =1114a(17) =1199a(18) =1397a(19) =1492a(20) =1712a(21) =1817a(22) =2059a(23) =2174a(24) =2438a(25) =2563a(26) =2849a(27) =2984a(28) =3292a(29) =3437