# A164961 (b-file synthesized from sequence entry) 0 1 1 2 2 2 3 12 4 24 5 12 6 120 7 360 8 360 9 120 10 1680 11 6720 12 10080 13 6720 14 1680 15 30240 16 151200 17 302400 18 302400 19 151200 20 30240 21 665280 22 3991680 23 9979200 24 13305600 25 9979200 26 3991680 27 665280 28 17297280 29 121080960 30 363242880 31 605404800 32 605404800