178956972
domain: N
Appears in sequences
- Number of distinct quadratic residues mod 2^n.at n=30A023105
- Number of distinct quadratic residues mod 4^n.at n=15A039301
- Number of distinct quadratic residues mod 8^n.at n=10A039305
- Expansion of 2*(1-x-x^2)/((1-x)*(1+x)*(1-2*x)).at n=28A052953
- a(n) = -a(n-1) + 2*a(n-2), a(0)=1, a(1)=2.at n=29A084247
- Binomial transform of (-1)^mod(n,3) (A257075).at n=29A086953
- Expansion of (1-x+2*x^2)/((1+x)*(1-2*x)).at n=28A097073
- Jacobsthal numbers(A001045) + 1.at n=29A128209
- Binomial transform of A101000.at n=27A130624
- a(n) = 3a(n-1) - 3a(n-2) + 2a(n-3), a(0) = 3, a(1) = 2, a(2) = 0.at n=29A131370
- Row sums of triangle A135230.at n=28A135231
- Second differences of Jacobsthal sequence A001045, pairs with even and odd indices swapped.at n=28A140505
- Jacobsthal numbers A001045, every second term incremented by 1.at n=29A155944
- a(n) = 2*a(n-1) - a(n-3) + 2*a(n-4) for n>3, a(0)=a(1)=1, a(2)=0, a(3)=2.at n=29A166249
- Expansion of Sum_{k>=1} x^k/(1 - x^k - 2*x^(2*k)).at n=28A309729
- Number of non-colorable strings of length n considered by the alternating coloring function.at n=30A378105