Triangle read by rows: (A000012 * A136572 + A136572 * A000012) - A000012.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =3a(6) =6a(7) =6a(8) =7a(9) =11a(10) =24a(11) =24a(12) =25a(13) =29a(14) =47a(15) =120a(16) =120a(17) =121a(18) =125a(19) =143a(20) =239a(21) =720a(22) =720a(23) =721a(24) =725a(25) =743a(26) =839a(27) =1439a(28) =5040a(29) =5040