# A012887 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 3 4 -3 5 -23 6 -51 7 35 8 665 9 2017 10 -2311 11 -45133 12 -146091 13 387025 14 5568437 15 15639707 16 -99321807 17 -1058587839 18 -1821476879 19 34121660131 20 274379440173 21 -74418715727 22 -14824670374547 23 -86166831190837