534625820200domain: NAppears in sequencesNumerators of convergents to e.at n=26A007676a(3n) = a(3n-1) + a(3n-2), a(3n+1) = 2n*a(3n) + a(3n-1), a(3n+2) = a(3n+1) + a(3n).at n=28A113873