-765

Appears in sequences

• sech(arcsinh(x)*cos(x))=1-1/2!*x^2+21/4!*x^4-765/6!*x^6+53193/8!*x^8...at n=3A012645
• Expansion of e.g.f. theta_3^(3/2).at n=6A015665
• Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^15 in powers of x.at n=7A047640
• A Chebyshev transform of the Padovan numbers.at n=25A100049
• Inverse modulo 2 binomial transform of (-2)^n.at n=9A100744
• Riordan array (1/(1+3x+2x^2),x/(1+3x+2x^2)).at n=32A111806
• First differences of A158916.at n=9A158926
• Values of n such that L(5) and N(5) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=32A226925
• Values of n such that L(11) and N(11) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=17A227449
• Expansion of eta(q)^3 * eta(q^5)^9 in powers of q.at n=43A227901
• Triangle read by rows giving coefficients in Gould's polynomials for counting fountains of coins.at n=18A259879
• T(n, k) = [x^k] (-2)^n*(B(n, x/2) - B(n, (x+1)/2)) where B(n, x) are the Bernoulli polynomials. Triangle read by rows, for 0 <= k <= n.at n=48A333303