# A094674 (b-file synthesized from sequence entry) 0 1 1 -1 2 1 3 0 4 3 5 -6 6 0 7 -15 8 1 9 0 10 45 11 0 12 105 13 -15 14 0 15 -420 16 0 17 -945 18 1 19 0 20 210 21 0 22 4725 23 0 24 10395 25 -28 26 0 27 -3150 28 0 29 -62370 30 0 31 -135135 32 1 33 0 34 630 35 0 36 51975 37 0 38 945945 39 0 40 2027025 41 -45 42 0 43 -13860 44 0 45 -945945 46 0 47 -16216200 48 0 49 -34459425 50 1 51 0 52 1485 53 0 54 315315 55 0 56 18918900 57 0