133651

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 87 ones.at n=9A031855
• a(n) = a(n-1) + 2*(n-1)*a(n-2).at n=10A047974
• Square array A(n,k), n >= 0, k >= 1, read by antidiagonals downwards, where column k is the expansion of e.g.f. exp(Sum_{j=1..k} x^j).at n=76A293669