# A006821 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 1 4 3 5 60 6 7848 7 3459383 8 2585136675 9 2807105250897 10 4221456117363365 11 8516994770090547979 12 22470883218081146186209 13 75883288444204588922998674 14 322040154704144697047052726990