The matrix-vector product A133566 * A000108.

Terms

a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =42a(6) =174a(7) =429a(8) =1859a(9) =4862a(10) =21658a(11) =58786a(12) =266798a(13) =742900a(14) =3417340a(15) =9694845a(16) =45052515a(17) =129644790a(18) =607283490a(19) =1767263190a(20) =8331383610a(21) =24466267020a(22) =115948830660a(23) =343059613650