# A288580 (b-file synthesized from sequence entry) 0 1 1 1 2 -1 3 1 4 -1 5 4 6 1 7 1 8 -4 9 -36 10 1 11 1 12 -2 13 9 14 576 15 1 16 1 17 -4 18 -9 19 64 20 -14400 21 1 22 1 23 2 24 -3 25 -8 26 -225 27 518400 28 1 29 1 30 2 31 -6 32 -16 33 40 34 -2304 35 -25401600 36 1 37 1 38 2 39 -9 40 -4 41 -15 42 324 43 11025 44 1625702400 45 1 46 1 47 2 48 3 49 -8 50 -25 51 144 52 280 53 147456 54 -131681894400 55 1 56 1 57 2 58 3 59 -12 60 -5 61 -24 62 105 63 -2240 64 -893025 65 13168189440000