499069107643domain: NAppears in sequencesNumerators of coefficients for central differences M_{4}^(2*n).at n=22A002675Divisors of 2^46 - 1.at n=12A003551a(n)=2*(4^n-1)/denominator(B(2n)) where B(k) denotes the k-th Bernoulli number.at n=23A090648(2^(p-1)-1)/(3*p) where p = prime(n).at n=12A096060