# A012163 (b-file synthesized from sequence entry) 0 1 1 -1 2 -3 3 -21 4 185 5 -9641 6 1668021 7 -192801597 8 42064398961 9 -10576096455505 10 3476312353756781 11 -1396500495046819941 12 679259896835809126697 13 -392775363671591649764601