# A082038 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 3 5 2 6 1 7 7 8 14 9 6 10 1 11 13 12 42 13 78 14 24 15 1 16 21 17 86 18 258 19 504 20 120 21 1 22 31 23 146 24 546 25 1752 26 3720 27 720 28 1 29 43 30 222 31 942 32 3768 33 13320 34 30960 35 5040 36 1 37 57 38 314 39 1446 40 6552 41 28920 42 113040 43 287280 44 40320 45 1 46 73 47 422 48 2058 49 10104 50 50520 51 246960 52 1063440