# A062757 (b-file synthesized from sequence entry) 1 15 2 315 3 5040 4 85680 5 278460 6 42840 7 14608440 8 540512280 9 10810245600 10 46844397600 11 480155075400 12 145486987846200 13 17749412517236400 14 5916470839078800 15 10769949084069775600 16 312328523438023492400