# A085814 (b-file synthesized from sequence entry) 0 -1 1 -2 2 0 3 -8 4 12 5 8 6 0 7 -128 8 252 9 472 10 840 11 1120 12 2112 13 128 14 0 15 -32768 16 65532 17 131000 18 261528 19 519648 20 1029192 21 1991728 22 3865664 23 6825984 24 13835328 25 21056128 26 39611520 27 20680192 28 134234112 29 32768 30 0 31 -2147483648 32 4294967292 33 8589934456 34 17179866936 35 34359709664 36 68719241112 37 137436945552