# A013495 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 -4 4 9 5 -48 6 385 7 -2420 8 17297 9 -170688 10 1760289 11 -18395012 12 219987801 13 -2936841776 14 40948952993 15 -606801250484 16 9752505856033 17 -166636197964032 18 2990053004436417 19 -56703580249101188