141248

Appears in sequences

• Number of nX3 1..5 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.at n=4A166821
• E.g.f. B(x) satisfies: A(x)^2 + B(x)^2 = C(x)^2, such that B'(x) = B(x) + A(x)*C(x).at n=8A292182