Numbers which are both lucky and pentagonal.

Terms

a(0) =1a(1) =51a(2) =477a(3) =651a(4) =925a(5) =2625a(6) =5551a(7) =6501a(8) =9801a(9) =17767a(10) =20475a(11) =25285a(12) =26467a(13) =29751a(14) =39285a(15) =45327a(16) =67947a(17) =75825a(18) =84135a(19) =84847a(20) =95887a(21) =99717a(22) =102051a(23) =114955a(24) =135751a(25) =151527a(26) =154401a(27) =178365a(28) =245835a(29) =261877