A054525 * A000041.

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =4a(5) =5a(6) =10a(7) =12a(8) =20a(9) =25a(10) =41a(11) =47a(12) =76a(13) =90a(14) =129a(15) =161a(16) =230a(17) =270a(18) =384a(19) =458a(20) =615a(21) =750a(22) =1001a(23) =1187a(24) =1570a(25) =1881a(26) =2414a(27) =2907a(28) =3717a(29) =4400