# A135994 (b-file synthesized from sequence entry) 0 0 1 2 2 -1 3 6 4 -3 5 16 6 -8 7 42 8 -21 9 110 10 -55 11 288 12 -144 13 754 14 -377 15 1974 16 -987 17 5168 18 -2584 19 13530 20 -6765 21 35422 22 -17711 23 92736 24 -46368 25 242786 26 -121393 27 635622 28 -317811 29 1664080 30 -832040 31 4356618 32 -2178309 33 11405774 34 -5702887 35 29860704 36 -14930352 37 78176338