# A048884 (b-file synthesized from sequence entry) 1 1 2 5 3 9 4 26 5 236 6 244 7 4862 8 5396 9 6868 10 9608 11 9704 12 23764 13 82665 14 733064 15 25881904 16 25886864 17 33299110 18 261851668