116620

Appears in sequences

• Numbers k such that 2*R_k + 5 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=10A099409
• The total number of rectangles appearing in the Thue-Morse sequence logical matrices (1, 0 version) after n stages.at n=10A241893
• Number of permutations of [n] such that for each cycle c the smallest integer interval containing all elements of c has at most five elements.at n=11A276839
• a(n) = Sum_{k = 0..n} n! * LaguerreL(n, -k).at n=5A343849