# A146280 (b-file synthesized from sequence entry) 1 1 2 1 3 5 4 17 5 37 6 109 7 2661 8 46501 9 480069 10 5729689 11 346242155 12 24356919567 13 1272792100111 14 72738009625423 15 11858558725473199 16 2972962662671644607 17 716003950107687603735