# A026018 (b-file synthesized from sequence entry) 3 1 4 7 5 36 6 164 7 702 8 2898 9 11696 10 46512 11 183141 12 716243 13 2788060 14 10817820 15 41880930 16 161900910 17 625272480 18 2413491360 19 9313307370 20 35936613414 21 138680365704 22 535290282632 23 2066802226236 24 7983111461732 25 30848211650592