# A186753 (b-file synthesized from sequence entry) 0 1 1 2 2 2 3 3 4 8 5 3 6 4 7 20 8 20 9 4 10 5 11 40 12 76 13 40 14 5 15 6 16 70 17 216 18 216 19 70 20 6 21 7 22 112 23 511 24 832 25 511 26 112 27 7 28 8 29 168 30 1064 31 2568 32 2568 33 1064 34 168 35 8 36 9 37 240 38 2016 39 6768 40 10036 41 6768 42 2016 43 240 44 9 45 10 46 330 47 3552 48 15840 49 32680 50 32680 51 15840 52 3552 53 330 54 10 55 11 56 440