# A334680 (b-file synthesized from sequence entry) 0 0 1 2 2 9 3 43 4 218 5 1155 6 6324 7 35511 8 203412 9 1184040 10 6983925 11 41652468 12 250763464 13 1521935948 14 9301989144 15 57203999295 16 353701790376 17 2197600497330 18 13713291247635 19 85907187607395 20 540072341320050 21 3406202392821375 22 21545888897092560 23 136655834260685220 24 868897745157965328