7778742050

Appears in sequences

• One of four 3rd-order recurring sequences for which the first derived sequence and the Galois transformed sequence coincide.at n=25A032908
• a(n) = Fibonacci(4n+1) + 1, or Fibonacci(2n+1)*Lucas(2n).at n=12A081003
• a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + Sum_{i = 1..n} (a(i) - a(1)).at n=25A093467
• a(n) = Fibonacci(n)*Lucas(n-1).at n=25A128534
• Sequence a(n) = 1 + A001519(n+1) appearing in a certain touching problem for three circles and a chord, together with A246638.at n=24A246640