Column 0 of triangle A105542, which equals the matrix square of triangle A105540.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =13a(5) =26a(6) =33a(7) =75a(8) =101a(9) =172a(10) =356a(11) =633a(12) =700a(13) =1125a(14) =3844a(15) =3494a(16) =6203a(17) =11890a(18) =21364a(19) =30581a(20) =42967a(21) =94001a(22) =94755a(23) =305936a(24) =220915a(25) =372660a(26) =1087653a(27) =1511734a(28) =2078209a(29) =2677011