# A150338 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 23 4 86 5 324 6 1299 7 5248 8 21775 9 91053 10 386100 11 1650934 12 7124220 13 30968386 14 135455089 15 595865245 16 2633401172 17 11691086039 18 52101621996 19 233046312802 20 1045751149946 21 4706689810491 22 21241503177894 23 96104232133673 24 435826985828029 25 1980691355824627 26 9019785417646572 27 41151396449899485