# A136579 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 1 4 0 5 2 6 0 7 1 8 0 9 6 10 1 11 0 12 2 13 0 14 24 15 0 16 1 17 0 18 6 19 0 20 120 21 1 22 0 23 2 24 0 25 24 26 0 27 720 28 0 29 1 30 0 31 6 32 0 33 120 34 0 35 5040 36 1 37 0 38 2 39 0 40 24 41 0 42 720 43 0 44 40320