# A091095 (b-file synthesized from sequence entry) 0 1 1 4 2 -8 3 64 4 -128 5 1024 6 -2048 7 16384 8 -32768 9 262144 10 -524288 11 4194304 12 -8388608 13 67108864 14 -134217728 15 1073741824 16 -2147483648 17 17179869184 18 -34359738368 19 274877906944 20 -549755813888 21 4398046511104 22 -8796093022208 23 70368744177664