23843770275
domain: N
Appears in sequences
- Expansion of x*(1-2*x-x^2)/( (1-x)*(1+x)*(1-3*x+x^2)).at n=28A107387
- A product of consecutive doubled Fibonacci numbers.at n=25A166536
- Numerators b(n) of Pythagorean approximations b(n)/a(n) to 1/2.at n=25A195548
- a(n) = 7*a(n-1) - a(n-2) - 4 with a(1)=1, a(2)=3.at n=13A206351
- a(n) = F(n)^2 - F(n-1)^2 or F(n+1) * F(n-2) where F(n) = A000045(n), the Fibonacci numbers.at n=26A226205
- Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 0,1 or 2,-2.at n=15A264085