# A150334 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 23 4 84 5 320 6 1246 7 5066 8 20658 9 86447 10 363905 11 1551717 12 6680516 13 28928013 14 126428930 15 554487973 16 2448780826 17 10853451220 18 48323714099 19 215999075802 20 968342883670 21 4357205440631 22 19650838467499 23 88894872008197 24 403000279608600 25 1831245639619344 26 8338814533961132 27 38040367001178855