# A012908 (b-file synthesized from sequence entry) 0 1 1 0 2 4 3 -6 4 43 5 -170 6 1300 7 -8085 8 74365 9 -622260 10 6828550 11 -71435375 12 916947475 13 -11485611150 14 169312686400 15 -2467472314125 16 41136075813625 17 -683273434337000 18 12720608899482250 19 -237102839757034875