203416012800domain: NAppears in sequencesDenominator of (5/2)*Sum_{i=1..n} (-1)^(i-1)/(i^3*C(2*i,i)).at n=8A089639Triangle read by rows: denominators of c_{n,k}, n >= 0, k = 0..n, used in the proof that Zeta(3) is irrational.at n=44A303989