# A157805 (b-file synthesized from sequence entry) 0 1 1 5 2 6 3 55 4 30 5 125 6 126 7 2015 8 510 9 2075 10 2046 11 15685 12 8190 13 38225 14 32766 15 118975 16 131070 17 3726575 18 524286 19 -217736285 20 2097150 21 4730505125 22 8388606 23 -968249463115 24 33554430 25 14717801331875 26 134217726 27 -2093659805510855 28 536870910 29 86125674710684825