43190

Appears in sequences

• a(1) = 1, a(2) = 2, a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-2)*a(2) for n >= 3.at n=11A014431
• Number of 3 X n binary matrices with distinct rows, up to row and column permutation; (n,3)-hypergraphs (including empty hyperedge but excluding multiple hyperedges).at n=14A055194
• Engel expansion for i^i = exp(-Pi/2).at n=8A083283
• Numbers n with property that n^2 is a sum of some 120 successive primes.at n=24A166262
• Numbers k such that Bernoulli number B_{k} has denominator 4686.at n=33A295770