75023

Appears in sequences

• a(n) = Fibonacci(n+3) - 2.at n=22A001911
• Number of strict (-1)st-order maximal independent sets in path graph.at n=22A007382
• Expansion of (1-x)/(1-2*x^2-x^3).at n=27A078024
• a(n) = Fibonacci(4n+1) - 2, or Fibonacci(2n+2)*Lucas(2n-1).at n=5A081012
• Partial sums of repeated Fibonacci sequence.at n=44A094707
• Numbers n such that phi(phi(n)) + sigma(sigma(n)) is a 4th power.at n=33A172464
• 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=43A226538
• Number of compositions of n into parts 1 and 2 with both parts present.at n=21A245738
• a(n) = (Fibonacci(n+2)-1) mod Fibonacci(floor(n/2)).at n=48A270741
• a(n) = a(n-1) + a(n-2) - a(n-3) + a(n-4) + a(n-5), with a(0)=a(1)=a(2)=1, a(3)=-1 and a(4)=1.at n=27A290968
• Partial sums of L(1) - F(1) + L(2) - F(2) + L(3) - F(3) + ..., where L = A000032 and F = A000045.at n=42A355019
• Number of sets that can be represented as a length-n combination of commas and braces, with elements possibly repeated.at n=40A373516