-680

Appears in sequences

• Expansion of Product (1 - x^k)^10 in powers of x.at n=21A010818
• Expansion of e.g.f. sin(arctanh(x) * exp(x)).at n=6A012710
• Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^17 in powers of x.at n=3A047642
• Dirichlet inverse of sigma_2 function (A001157).at n=51A053822
• McKay-Thompson series of class 10C for Monster.at n=36A058099
• Triangle of coefficients of characteristic polynomial of M_n, the n X n matrix M_(i,j) = min(i,j).at n=58A076756
• a(1) = 4; then alternately add -4 and multiply by -2.at n=18A096406
• a(n) = Sum_{k=0..n} (-1)^(n-k)*k*Stirling2(n,k).at n=9A101851
• Riordan array (1/(1+x)^3,x/(1+x)^2).at n=51A109954
• Expansion of eta(q)^4 * eta(q^2) * eta(q^6)^5 / eta(q^3)^4 in powers of q.at n=25A111661
• Inverse of twin-prime related triangle A111125.at n=41A113187
• Expansion of theta_4(q)^2*theta_4(q^2)^4 in powers of q.at n=13A120030
• Expansion of theta_4(q)^2*theta_4(q^2)^4 in powers of q.at n=26A120030
• Triangle read by rows: T(0,0)=1; T(n,k) is the coefficient of x^(n-k) in the monic characteristic polynomial of the n X n matrix (min(i,j)) (i,j=1,2,...,n) (0 <= k <= n, n >= 1).at n=62A123970
• Riordan array (1/(1+x)^3, x/(1+x)^3).at n=32A127895
• Row sums of triangle A129462 (v=2 member of a certain family).at n=5A129463
• Riordan array (1/(1+x), x/(1+x)^2), inverse array is A039599.at n=62A129818
• G.f.: Product_{k>0} (1-x^(4k-1)) / (1-x^(4k-2)).at n=53A131795
• Expansion of (eta(q) * eta(q^2) / (eta(q^5) * eta(q^10)))^2 in powers of q.at n=36A132041
• a(n) = 13 + 12*n - n^2.at n=33A136316