# A077903 (b-file synthesized from sequence entry) 0 1 1 0 2 2 3 -3 4 6 5 -12 6 25 7 -48 8 98 9 -195 10 390 11 -780 12 1561 13 -3120 14 6242 15 -12483 16 24966 17 -49932 18 99865 19 -199728 20 399458 21 -798915 22 1597830 23 -3195660 24 6391321 25 -12782640 26 25565282 27 -51130563 28 102261126 29 -204522252 30 409044505 31 -818089008 32 1636178018 33 -3272356035 34 6544712070