# A164628 (b-file synthesized from sequence entry) 0 1 1 17 2 272 3 4352 4 69632 5 1114112 6 17825792 7 285212536 8 4563398400 9 73014339720 10 1168228880640 11 18691653212160 12 299066309345280 13 4785058676736000 14 76560902463178680 15 1224973857577579200 16 19599572411913213000