# A104749 (b-file synthesized from sequence entry) 0 1 1 -2 2 -6 3 20 4 -26 5 324 6 932 7 -3864 8 -12282 9 -8812 10 123596 11 -1011048 12 1302748 13 -9066968 14 -11700216 15 327436496 16 500340678 17 4725531060 18 3741191612 19 -11250963784 20 -147523219212 21 -1497706973320 22 -7306482940296 23 -675852523344 24 10735087541148