# A268482 (b-file synthesized from sequence entry) 1 1 2 -1 3 8 4 4 5 -76 6 264 7 -33 8 1248 9 -9735 10 22080 11 456 12 -32088 13 440448 14 -2085096 15 3715440 16 -9460 17 1216600 18 -26297700 19 205444800 20 -704121000 21 1087450320 22 274800 23 -64995600 24 2073673920 25 -23974142160 26 129203087760 27 -354403429920 28 500558083200