# A009621 (b-file synthesized from sequence entry) 0 0 1 1 2 0 3 4 4 -12 5 71 6 -420 7 2962 8 -23688 9 213229 10 -2132280 11 23455136 12 -281461620 13 3659001139 14 -51226015932 15 768390239086 16 -12294243825360 17 209002145031257 18 -3762038610562608 19 71478733600689724 20 -1429574672013794460