# A012643 (b-file synthesized from sequence entry) 0 1 1 1 2 -15 3 225 4 -3423 5 58305 6 -3367023 7 750974497 8 -195722347967 9 56832659001729 10 -19485490128305615 11 8027995798338091873 12 -3957958222909649739039 13 2309625363907160407164225