# A174545 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 2 5 1 6 1 7 2 8 2 9 1 10 1 11 2 12 28 13 2 14 1 15 1 16 2 17 60 18 60 19 2 20 1 21 1 22 2 23 124 24 720 25 124 26 2 27 1 28 1 29 2 30 252 31 2408 32 2408 33 252 34 2 35 1 36 1 37 2 38 508 39 7728 40 27216 41 7728 42 508 43 2 44 1 45 1 46 2 47 1020 48 24200 49 124320 50 124320 51 24200 52 1020 53 2 54 1 55 1 56 2 57 2044 58 74640 59 545680 60 1360800 61 545680