# A118437 (b-file synthesized from sequence entry) 0 1 1 2 2 0 3 8 4 -32 5 -128 6 320 7 128 8 2048 9 8192 10 -15360 11 2048 12 -131072 13 -524288 14 1064960 15 32768 16 8388608 17 33554432 18 -66846720 19 524288 20 -536870912 21 -2147483648 22 4299161600 23 8388608 24 34359738368 25 137438953472 26 -274810798080 27 134217728