-2255

Appears in sequences

• Expansion of 1/( (1-x)*(1 + x^2 + x^3) ).at n=42A077889
• Row sums of a number triangle related to the Pell numbers.at n=47A110331
• a(n) = 13 + 12*n - n^2.at n=54A136316
• FP1 polynomials related to the generating functions of the right hand columns of the A156920 triangle.at n=23A156921
• G.f. of the z^2 coefficients of the FP1 in the third column of the A156921 matrix.at n=3A156929
• Dirichlet g.f.: zeta(s) / (zeta(s-1) * zeta(s-2)).at n=46A351654
• First term of the n-th differences of the squarefree numbers. Inverse zero-based binomial transform of A005117.at n=13A377041