Number whose binary expansion encodes via runlengths the partition that is at the top of the main trunk of Bulgarian solitaire game tree drawn for the deck with n(n+1)/2 cards.

A227451

Number whose binary expansion encodes via runlengths the partition that is at the top of the main trunk of Bulgarian solitaire game tree drawn for the deck with n(n+1)/2 cards.

Terms

    a(0) =0a(1) =1a(2) =5a(3) =18a(4) =77a(5) =306a(6) =1229a(7) =4914a(8) =19661a(9) =78642a(10) =314573a(11) =1258290a(12) =5033165a(13) =20132658a(14) =80530637a(15) =322122546a(16) =1288490189a(17) =5153960754a(18) =20615843021a(19) =82463372082a(20) =329853488333

External references