# A355356 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 3 4 10 5 28 6 79 7 216 8 603 9 1702 10 4933 11 14620 12 44287 13 136352 14 424858 15 1334162 16 4211572 17 13344072 18 42412667 19 135217722 20 432483522 21 1387929369 22 4469341807 23 14439523193 24 46795072968 25 152076428228 26 495460089510 27 1617787324674 28 5292984017236 29 17348743335252