66283

Appears in sequences

• Numbers k such that 40*R_k + 7 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=10A056682
• Expansion of x*(4+5*x-x^2)/ (1-2*x-3*x^2+x^3).at n=9A095126
• Number of tilings of a 9 X n rectangle using integer-sided square tiles of area > 1.at n=21A226373
• a(n) = Sum_{k=0..n} k^(2*k).at n=4A350008