# A176740 (b-file synthesized from sequence entry) 0 -1 1 -1 2 3 3 -1 4 10 5 -15 6 -1 7 15 8 10 9 -105 10 105 11 -1 12 21 13 35 14 -210 15 -280 16 1260 17 -945 18 -1 19 28 20 56 21 35 22 -378 23 -1260 24 -280 25 3150 26 6300 27 -17325 28 10395 29 -1 30 36 31 84 32 126 33 -630 34 -2520 35 -1575 36 -2100 37 6930 38 34650 39 15400 40 -51975 41 -138600 42 270270 43 -135135 44 -1 45 45 46 120 47 210 48 126 49 -990 50 -4620 51 -6930 52 -4620 53 -5775