Positive integers not expressible as the sum of a prime and a triangular number.

Terms

a(0) =1a(1) =36a(2) =105a(3) =171a(4) =210a(5) =216a(6) =325a(7) =351a(8) =406a(9) =528a(10) =561a(11) =630a(12) =741a(13) =780a(14) =990a(15) =1081a(16) =1176a(17) =1275a(18) =1596a(19) =1711a(20) =1830a(21) =1953a(22) =2016a(23) =2145a(24) =2346a(25) =2628a(26) =2775a(27) =3003a(28) =3081a(29) =3240