# A087701 (b-file synthesized from sequence entry) 1 1 2 16 3 52 4 160 5 9232 6 9232 7 4372 8 13120 9 39364 10 118096 11 1276936 12 1276936 13 6810136 14 9565936 15 28697812 16 86093440 17 1570824736 18 1570824736 19 2324522932 20 6973568800 21 20920706404 22 62762119216 23 188286357652 24 564859072960 25 9161049517720