-2360

Appears in sequences

• REVEGF transform of [1,2,12,152,3640,...] (A053549).at n=4A053551
• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 7.at n=41A060026
• Triangle read by rows of coefficients of Chebyshev-like polynomials P_{n,6}(x) with 0 omitted (exponents in increasing order).at n=39A136398
• G.f.: Sum_{n>=0} x^n/(1 + x^n)^n.at n=48A217670
• a(1)=0; thereafter a(n) = (n-1)*sigma(n)-n*sigma(n-1) where sigma is the sum-of-divisors function A000203.at n=56A335153