-669

Appears in sequences

• a(n) = 5*a(n-2) + 2*a(n-3).at n=12A135949
• Years in which a transit of Venus (as seen from Earth) took place or is expected to occur, according to the catalog by Fred Espenak.at n=21A171467
• a(n) = 2^n * Sum_{k=0..n} k^p*q^k, where p=2, q=-1/2.at n=13A232603
• Expansion of Product_{k>=1} (1 + x^(2*k))^(2*k)/(1 + x^(2*k-1))^(2*k-1).at n=11A284474