# A025981 (b-file synthesized from sequence entry) 0 1 1 26 2 449 3 6526 4 86565 5 1087242 6 13183033 7 156056342 8 1816137389 9 20873693698 10 237678368577 11 2687080081998 12 30211476701173 13 338208740115194 14 3773239145742281 15 41982119790892294 16 466091728979229117