# A058403 (b-file synthesized from sequence entry) 0 2 1 20 2 8 3 360 4 288 5 48 6 9840 7 11360 8 3520 9 320 10 363360 11 522752 12 225344 13 37888 14 2176 15 16776000 16 27849600 17 14871296 18 3491072 19 373504 20 14848 21 922158720 22 1692808704 23 1053556480 24 308703232 25 46459904 26 3467264 27 101376 28 58499239680 29 115821927936