# A008914 (b-file synthesized from sequence entry) 1 12096 2 4245696 3 251596800 4 5859000000 5 664376138496 6 4329310519296 7 22594320403200 8 376611192619200 9 3914077489672896 10 71776114783027200 11 167795197370551296 12 796793353927300800 13 11570921621943780096