15636757domain: NAppears in sequencesNumerators of fractions leading to e - 1/e (A174548).at n=11A195326Numerators of fractions leading to e - 1/e (A174548).at n=12A195326a(n) is the numerator of Sum_{k=0..n} 1 / (2*k+1)!.at n=5A354211