Numbers of the form 9*h^2 + 2*h, for h an integer.

Terms

a(0) =0a(1) =7a(2) =11a(3) =32a(4) =40a(5) =75a(6) =87a(7) =136a(8) =152a(9) =215a(10) =235a(11) =312a(12) =336a(13) =427a(14) =455a(15) =560a(16) =592a(17) =711a(18) =747a(19) =880a(20) =920a(21) =1067a(22) =1111a(23) =1272a(24) =1320a(25) =1495a(26) =1547a(27) =1736a(28) =1792a(29) =1995