# A273461 (b-file synthesized from sequence entry) 0 1 1 2 2 9 3 40 4 484 5 9717 6 338724 7 21624680 8 2504301849 9 520443847520 10 195145309791364 11 131850659243316222 12 160668896658179472676 13 352891729183598844656996 14 1397187513066371784602204416 15 9972288382286063615850619475640