Triangle read by rows, A000012^(-1) * A152431.

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =2a(6) =4a(7) =1a(8) =0a(9) =5a(10) =16a(11) =4a(12) =2a(13) =0a(14) =15a(15) =70a(16) =16a(17) =8a(18) =5a(19) =0a(20) =52a(21) =334a(22) =70a(23) =32a(24) =20a(25) =15a(26) =0a(27) =203a(28) =1720a(29) =334