# A086344 (b-file synthesized from sequence entry) 0 1 1 0 2 4 3 -8 4 32 5 -96 6 320 7 -1024 8 3328 9 -10752 10 34816 11 -112640 12 364544 13 -1179648 14 3817472 15 -12353536 16 39976960 17 -129368064 18 418643968 19 -1354760192 20 4384096256 21 -14187233280 22 45910851584 23 -148570636288 24 480784678912 25 -1555851902976 26 5034842521600 27 -16293092655104