# A208732 (b-file synthesized from sequence entry) 0 1 1 4 2 36 3 664 4 21276 5 1050664 6 73939356 7 7024817944 8 866058563196 9 134419597387144 10 25644210185987676 11 5897980691609567224 12 1609292585008090909116 13 513950106691675965931624 14 189914985024774644611299996