7881195

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 1, with a(0) = 0 and a(1) = 2.at n=32A001610
• Partial sums of squares of Lucas numbers.at n=15A005970
• Sum of first n terms of A_n (using absolute values of terms).at n=31A039928
• a(n) = Lucas(4n+1) - 1, or 5*Fibonacci(2n)*Fibonacci(2n+1).at n=8A081017
• a(n) = Lucas(n) + (-1)^n.at n=33A099925
• a(n) = Lucas(3*n) - 1.at n=11A100233
• Sum of first n terms of A_n (signed values).at n=31A100543
• Odd numbers in A138123.at n=31A142248
• Continued fraction expansion for exp( Sum_{n>=1} 1/(n*Lucas(n)) ), where Lucas(n) = A000032(n) = ((1+sqrt(5))/2)^n + ((1-sqrt(5))/2)^n.at n=47A174505
• Continued fraction expansion for exp( Sum_{n>=1} 1/(n*A014448(n)) ), where A014448(n) = (2+sqrt(5))^n + (2-sqrt(5))^n.at n=16A174506
• Position of first occurrence of n in A182576.at n=31A182580
• Expansion of x*(1 + 2*x)/((1 - x)*(1 + x)*(1 - x - x^2)).at n=32A301653
• Number of nonempty subsets of {1, ..., n} containing no two cyclically successive elements.at n=33A324015