a(n) = numerator(Sum_{j=0..2*n} Bernoulli(j, 1) * Bernoulli(2*n - j, 1)).

A363153

a(n) = numerator(Sum_{j=0..2*n} Bernoulli(j, 1) * Bernoulli(2*n - j, 1)).

Terms

    a(0) =1a(1) =7a(2) =-7a(3) =23a(4) =-121a(5) =481a(6) =-3015581a(7) =67337a(8) =-30135767a(9) =10946836702a(10) =-369658793327

External references