235953517800domain: NAppears in sequencesDenominator of Sum_{k=0..n} 1/C(3*n, 3*k).at n=11A100515Denominators of 4 * Sum_{k=0..3*n-1} (-1)^k/(2*k+1) + (-1)^(n+1) * Sum_{k=0..2*n-1} (-1)^k/(2^(2*n-k-2) * (8*n-k-1) * binomial(8*n-k-2, 4*n+k)).at n=3A280813