# A136581 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 2 4 0 5 2 6 0 7 6 8 0 9 6 10 24 11 0 12 24 13 0 14 24 15 0 16 120 17 0 18 120 19 0 20 120 21 720 22 0 23 720 24 0 25 720 26 0 27 720 28 0 29 5040 30 0 31 5040 32 0 33 5040 34 0 35 5040