Riordan array (1, (1/(1-x))c(x/(1-x))), c(x) the g.f. of A000108.

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =2a(5) =1a(6) =0a(7) =5a(8) =4a(9) =1a(10) =0a(11) =15a(12) =14a(13) =6a(14) =1a(15) =0a(16) =51a(17) =50a(18) =27a(19) =8a(20) =1a(21) =0a(22) =188a(23) =187a(24) =113a(25) =44a(26) =10a(27) =1a(28) =0a(29) =731