# A009202 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 1 5 -7 6 -47 7 -223 8 -895 9 -2959 10 -31 11 82721 12 1002497 13 8156073 14 53580465 15 239061825 16 -8587007 17 -19348243487 18 -305732208959 19 -3454706477375 20 -30437638147583 21 -182295608480935 22 144862063593105 23 26905043182243041