-481

Appears in sequences

• Coefficients of period polynomials.at n=10A006309
• Expansion of e.g.f. log(1+sinh(x))/cos(x).at n=6A009354
• a(n) = 2*a(n-1) - a(n-2) - a(n-4) with a(0) = a(1) = 0, a(2) = 1, a(3) = 2.at n=22A014292
• Determinant of rank n matrix of 1..n^2 filled successively along antidiagonals.at n=30A069480
• An invariant of the set {Log(2), Log(3), Log(5),..., Log(Prime(2n)), Log(Prime(2n+1))}.at n=7A086596
• G.f. A(x) satisfies: A(x)^4 equals the g.f. of A110638, which consists entirely of numbers 1 through 8.at n=8A112572
• Triangle T, read by rows, where all columns of T are different and yet all columns of the matrix square T^2 (A118407) are equal; also equals the matrix inverse of triangle A118400.at n=126A118404
• a(n) = A118443(n)/(n+1), where A118443 is the row sums of triangle A118441.at n=9A118444
• Numerator of real part of (3*i - 1)^(-n).at n=9A124869
• Coefficient table for sums of squares of Chebyshev's S-Polynomials.at n=62A128495
• a(n) = 2*a(n-1) - 5*a(n-2), with a(1) = -1, a(2) = -7.at n=8A138749
• Numerator of Bernoulli(n, -1/7).at n=4A158489
• a(n) = n^2 - (n-1)^2 - (n-2)^2 - ... - 1^2.at n=12A179297
• Expansion of (psi(x) / phi(x))^5 in powers of x where phi(), psi() are Ramanujan theta functions.at n=5A195861
• G.f.: imaginary part of 1/(1 - i*x - i*x^2) where i=sqrt(-1).at n=22A201838
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of A203945.at n=57A203946
• Expansion of f(x^3, x^5) / f(x, x^3) in powers of x where f(, ) is Ramanujan's general theta function.at n=45A258741
• Expansion of 1/(1 - x/(1 + x/(1 + x^2/(1 + x^3/(1 + x^4/(1 + x^5/(1 + ...))))))), a continued fraction.at n=60A302015
• Expansion of Sum_{k>=0} x^(k^2) / Product_{j=1..k} (1 + x^j)^j.at n=50A306708
• Triangular array T(n, k) read by rows: denominators of the coefficients for the iterated exponential F^{r}(x) = x + Sum_{n>=1} x^(n+1)*Sum_{k=1..n} r^(n+1-k)*T(n, k)/A381931(n, k) with F^{1}(x) = exp(x)-1 and F^{2}(x) = exp(exp(x)-1)-1.at n=29A381932