# A134685 (b-file synthesized from sequence entry) 1 1 2 -1 3 3 4 -1 5 -15 6 10 7 -1 8 105 9 -105 10 10 11 15 12 -1 13 -945 14 1260 15 -280 16 -210 17 35 18 21 19 -1 20 10395 21 -17325 22 6300 23 3150 24 -280 25 -1260 26 -378 27 35 28 56 29 28 30 -1 31 -135135 32 270270 33 -138600 34 -51975 35 15400 36 34650 37 6930 38 -2100 39 -1575 40 -2520 41 -630 42 126 43 84 44 36 45 -1