-1126

Appears in sequences

• Expansion of Product_{m>=1} (1-m*q^m).at n=25A022661
• Expansion of (1-q)^k/Product_{j=1..k} (1-q^j) for k=8.at n=41A275642
• a(n) = 2*1 - 4*3 + 6*5 - 8*7 + 10*9 - 12*11 + 14*13 - 16*15 + ... - (up to the n-th term).at n=48A319885
• Expansion of 1 / (1 + Sum_{i>=1} Sum_{j=1..i} x^(i*j)).at n=43A327799
• Dirichlet convolution of A000027 (identity function) with the Dirichlet inverse of A326042, where A326042(n) = A064989(sigma(A003961(n))).at n=63A349625
• G.f. A(x) satisfies A(x)^3 = A(x^3) + 3*A(x^4).at n=10A377256