# A047112 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 10 4 29 5 91 6 370 7 1305 8 4626 9 17888 10 66824 11 248839 12 955688 13 3646596 14 13892482 15 53548120 16 206439059 17 795884541 18 3083453744 19 11962794031 20 46444491143 21 180751142106 22 704383034528 23 2747337971249 24 10730723024786