# A375988 (b-file synthesized from sequence entry) 0 1 1 -4 2 0 3 12 4 108 5 1104 6 14136 7 225768 8 4386168 9 100885248 10 2683789344 11 81047258208 12 2737919298528 13 102266990392896 14 4184016413001408 15 186047367206499072 16 8933002185371731200 17 460580247564830138880 18 25378595790818821816320 19 1488230641037882346324480