# A358927 (b-file synthesized from sequence entry) 0 1 1 -1 2 4 3 20 4 56 5 120 6 560 7 4960 8 19600 9 41664 10 341376 11 695520 12 7207200 13 22238720 14 178433024 15 1429559296 16 179481600 17 11453245440 18 11444858880 19 393079864320 20 3928874471424 21 5864598896640 22 46910348656640 23 975649558118400 24 3002365391929344 25 7805131503206400