G.f.: 1/(1-G001190), where G001190 = x + x^2 + x^3 + 2x^4 + 3x^5 + ... is the g.f. for the Wedderburn-Etherington numbers A001190.

A085748

G.f.: 1/(1-G001190), where G001190 = x + x^2 + x^3 + 2x^4 + 3x^5 + ... is the g.f. for the Wedderburn-Etherington numbers A001190.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =20a(6) =46a(7) =106a(8) =248a(9) =582a(10) =1376a(11) =3264a(12) =7777a(13) =18581a(14) =44526a(15) =106936a(16) =257379a(17) =620577a(18) =1498788a(19) =3625026a(20) =8779271a(21) =21287278a(22) =51671864a(23) =125550018a(24) =305333281a(25) =743179460a(26) =1810290446a(27) =4412783988a(28) =10763786019a(29) =26271534125

External references