# A117508 (b-file synthesized from sequence entry) 1 3 2 21 3 3003 4 969969 5 872002131 6 1537339756953 7 5532885785273847 8 28676947025074349001 9 298326279901848452657403 10 3479379402495258503343291189 11 66257821961717207679166294112127