22542396

Appears in sequences

• Sum of Fermat coefficients.at n=20A000967
• Number of cyclic compositions of n into parts >= 2.at n=42A032190
• Number of orbits of length n under the map whose periodic points are counted by A001350.at n=42A060280
• (L(p)-1)/p where L() are the Lucas numbers (A000032) and p runs through the primes.at n=13A064723
• 1/Product_{n>=1} (1 - a(n)*x^n) = 1 + Sum_{k>=1} F(k+1)*x^k = 1/(1-x-x^2), where F(n) = A000045(n) (Fibonacci numbers).at n=42A157162
• a(n) = floor(phi^n/n), where phi = golden ratio = (1+sqrt(5))/2.at n=42A172128
• Number of n-bit binary necklaces (unmarked cyclic n-bit binary strings) containing no runs of length > 2.at n=42A316660