# A074441 (b-file synthesized from sequence entry) 1 0 2 0 3 0 4 6 5 60 6 300 7 1296 8 6048 9 30240 10 159408 11 883872 12 5018112 13 28304640 14 157697280 15 876311654 16 4895520768 17 27554100480 18 156139902720 19 889181991936 20 5078255822436 21 29046943180800 22 166354131141818 23 954240788994048 24 5484206701412352 25 31581437286776820