# A013009 (b-file synthesized from sequence entry) 0 0 1 1 2 -3 3 10 4 -55 5 393 6 -3485 7 36923 8 -455306 9 6408445 10 -101402557 11 1782112451 12 -34444583072 13 726178939315 14 -16584396680007 15 407872396640525 16 -10747394439586016 17 302068718096449161 18 -9020579413121532169