# A108946 (b-file synthesized from sequence entry) 0 1 1 -3 2 13 3 -48 4 181 5 -675 6 2521 7 -9408 8 35113 9 -131043 10 489061 11 -1825200 12 6811741 13 -25421763 14 94875313 15 -354079488 16 1321442641 17 -4931691075 18 18405321661 19 -68689595568 20 256353060613 21 -956722646883 22 3570537526921 23 -13325427460800 24 49731172316281