# A215586 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 -3 4 0 5 -30 6 90 7 -588 8 5040 9 -26520 10 325080 11 -2158728 12 27731880 13 -249259920 14 3181258080 15 -36821629848 16 482278043520 17 -6704476956480 18 93675256079040 19 -1479108131816448 20 22566722722104960 21 -390679249452835200 22 6559255213047250560 23 -122197022127873558528