# A035611 (b-file synthesized from sequence entry) 0 1 1 44 2 968 3 14212 4 156816 5 1388508 6 10286936 7 65652532 8 368804128 9 1854105484 10 8453107432 11 35333619428 12 136677756336 13 493244610364 14 1672424817272 15 5360494538388 16 16327295550016 17 47469373288172 18 132235461020168 19 354093052356164 20 913949931165392 21 2279318877511324 22 5504063080258968 23 12893712963761652