18454929
domain: N
Appears in sequences
- a(n) = a(n-1) + a(n-2) + 1, with a(0) = a(1) = 1.at n=34A001595
- a(n) = 2*Fibonacci(n) - (1 - (-1)^n)/2.at n=35A062114
- a(n+2) = a(n+1) + a(n) + (-1)^n, with a(1) = a(2) = 1.at n=36A066983
- a(n) = 2*Fibonacci(2*n+1) - 1.at n=17A069403
- Row sums of A128586.at n=36A128587
- a(0)=1, a(1)=-2; a(n+2) = a(n+1) + a(n) + (period 3: repeat 3, 1, -1).at n=36A226328
- 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=34A253197
- 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=35A255978