-794
domain: Z
Appears in sequences
- Shifts 2 places right under binomial transform.at n=8A010738
- Shifts 2 places left under inverse binomial transform.at n=10A010739
- Expansion of (1-x)^(-1)/(1+x+x^2-2*x^3).at n=16A077907
- Sum_{k=1..2*n-1} J(n,k)*k where J(i,j) is the Jacobi symbol.at n=58A097540
- Inverse binomial transform of A000960.at n=11A099064
- Expansion of x^2*(-1+x+x^2)/(-1+x+x^2-x^3+x^5).at n=25A107332
- Riordan array (1/((1-2x)(1-x)^2), -x/(1-x)^2).at n=31A135552
- a(n) = -a(n-1) + 3*a(n-2), starting a(1)=1, a(2)=2.at n=10A140165
- Alternating row sums of A066448.at n=51A350310
- G.f. satisfies A(x) = exp( Sum_{k>=1} ((-2)^k + A(x^k)) * x^k/k ).at n=13A363578