# A088159 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 25 4 202 5 1944 6 21356 7 261213 8 3500132 9 50800750 10 791987356 11 13177143096 12 232770367228 13 4346862352088 14 85504298103304 15 1766037126815893 16 38195654668499866 17 862911190841993448 18 20318964099125136372