121391

Appears in sequences

• a(n) = Fibonacci(n+3) - 2.at n=23A001911
• Number of irreducible nonpositively curved triangulations of an n-gon: All internal vertices have at valence at least 6 and no diagonals of the n-gon are allowed.at n=14A060050
• Interprimes which are of the form s*prime, s=19.at n=29A075294
• Partial sums of repeated Fibonacci sequence.at n=46A094707
• a(n) = abs( f(Fibonacci(n)) - Fibonacci(f(n)) ), where f(n) = n-2 if (n mod 3) = 0, f(n) = n+2 if (n mod 3) = 1, otherwise f(n) = n.at n=24A103114
• a(2)=1. a(n) = the largest integer coprime to a(n-1) and less than the n-th Fibonacci number.at n=24A157605
• Numbers that have 12 terms in their Zeckendorf representation.at n=11A179252
• a(2t) = a(2t-1) + 1, a(2t+1) = a(2t) + a(2t-2) for t >= 1, with a(0) = a(1) = 1.at n=45A226538
• a(n) = Fibonacci(2*n) - 2.at n=13A249450
• Partial sums of L(1) - F(1) + L(2) - F(2) + L(3) - F(3) + ..., where L = A000032 and F = A000045.at n=44A355019