-690

Appears in sequences

• Derivative of log of A002126.at n=27A023901
• Product_{k>=1} 1/(1 - x^k)^a(k) = 1 + 4x.at n=5A038065
• Difference between n and the sum of the factorials of its digits.at n=35A108911
• McKay-Thompson series of class 24G for the Monster group.at n=55A112161
• Expansion of q^(-1/3) * (eta(q) * eta(q^9))^2 / eta(q^3)^4 in powers of q.at n=19A192329
• Expansion of (1+2*x+30*x^2+13*x^3-13*x^5-30*x^6-2*x^7-x^8)/(1+2*x^4+x^8).at n=46A228937
• Triangle read by rows: T(n,k) = logarithmic polynomial A_k^(n)(x) evaluated at x=1.at n=23A260324
• a(n) = Sum_{k=0..floor(n/3)} (-1)^k * binomial(n-1-2*k,n-3*k) * binomial(2*k,k).at n=17A360314
• a(n) = 1 + Sum_{k=2..n} (-1)^k * k * a(floor(n/k)).at n=56A361982
• Dirichlet inverse of A341528, where A341528(n) = n * sigma(A003961(n)), and A003961 is fully multiplicative with a(prime(i)) = prime(i+1).at n=22A378228
• Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = -(1/n) * Sum_{d|n} mu(n/d) * (-k)^d.at n=41A383011