249033

Appears in sequences

• Number of bits necessary to represent u(n) in binary, where u is the Lucas-Lehmer sequence: u(0) = 100 (in binary); for n>0, u(n) = u(n-1)^2 - 2.at n=17A227615
• Number of n X 2 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.at n=16A278357