229969

Appears in sequences

• Truncated octahedral numbers: 16*n^3 - 33*n^2 + 24*n - 6.at n=24A005910
• Numbers k such that phi(sigma(phi(k))) = sigma(k).at n=19A066462
• Solution to a binomial problem together with companion sequence A081016(n-1).at n=6A089508
• a(n) = a(n-1) + a(n-3) + a(n-4) for n > 3, a(0) = -1, a(1) = 1, a(2) = 2, a(3) = 1.at n=28A111569
• Numerator of Sum_{k=1..n} 1/(Fibonacci(k)*Fibonacci(k+2)).at n=12A119996
• Numbers n such that n^2 - 1 is the product of four distinct Fibonacci numbers greater than 1.at n=24A242074
• a(n) = F(n)*F(n+1) - (-1)^n, where F = A000045.at n=14A260259
• Number of tilings of a 20 X n rectangle using 2*n copies of the disconnected shape [ooooo_____ooooo].at n=43A322473