-369658793327domain: ZAppears in sequencesa(n) = numerator(Sum_{j=0..n} Bernoulli(j, 1) * Bernoulli(n - j, 1)).at n=20A363150a(n) = numerator(Sum_{j=0..2*n} Bernoulli(j, 1) * Bernoulli(2*n - j, 1)).at n=10A363153