2692537

Properties

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 1, with a(0) = a(1) = 1.at n=30A001595
• a(n) = 2*Fibonacci(n) - (1 - (-1)^n)/2.at n=31A062114
• a(n+2) = a(n+1) + a(n) + (-1)^n, with a(1) = a(2) = 1.at n=32A066983
• a(n) = 2*Fibonacci(2*n+1) - 1.at n=15A069403
• Expansion of (-1-x-x^2-4*x^3-4*x^4+4*x^5+x^6+x^7+x^8) / ((x+1)*(x^2-x+1)*(x^2+x-1)*(x^4-x^3+2*x^2+x+1)).at n=30A108390
• Expansion of (-1-x-x^2-4*x^3-4*x^4+4*x^5+x^6+x^7+x^8) / ((x+1)*(x^2-x+1)*(x^2+x-1)*(x^4-x^3+2*x^2+x+1)).at n=31A108390
• Row sums of A128586.at n=32A128587
• Prime Leonardo numbers.at n=7A145912
• a(n) = a(n-1) + a(n-2) - (-1)^(a(n-1) + a(n-2)) with a(0)=0, a(1)=1.at n=31A253198
• a(n) = a(n-1) + a(n-2) + (1 + (-1)^(a(n-1) + a(n-2))) with a(0)=0, a(1)=1.at n=31A255978
• Primes which are not the sums of two consecutive non-Fibonacci numbers.at n=19A257110
• Prime numbersat n=196129