-280

Appears in sequences

• Expansion of 1 / (Sum_{n=-oo..oo} x^(n^2))^5.at n=3A004406
• Expansion of e.g.f. cos(x)/exp(tan(x)).at n=7A009114
• Expansion of e.g.f.: sin(tanh(x))*exp(x).at n=7A009524
• Expansion of sin(tanh(x))/cos(x).at n=3A009526
• arcsinh(sec(x)*tanh(x))=x+20/5!*x^5-280/7!*x^7+18000/9!*x^9...at n=3A012836
• cos(arcsinh(x)+arcsin(x))=1-4/2!*x^2+16/4!*x^4-280/6!*x^6+8320/8!*x^8...at n=3A013089
• Derivative of log of A002126.at n=32A023901
• Triangle of coefficients in expansion of sin(n*x) (or sin(n*x)/cos(x) if n is even) in ascending powers of sin(x).at n=37A028298
• Expansion of Product_{m>=1} ((1+q^(2*m-1))/(1+q^(2*m)))^5.at n=11A029842
• Expansion of (eta(q) / eta(q^7))^4 in powers of q.at n=29A030181
• Discriminants of quadratic number fields Q(sqrt -n) for n squarefree.at n=43A033197
• Generalized Stirling number triangle of first kind.at n=34A048176
• McKay-Thompson series of class 7B for the Monster group.at n=29A052240
• Matrix inverse of triangle A055140.at n=32A055141
• a(n) = primefloor(n)*primeceiling(n) - previousprime(n)*nextprime(n).at n=70A056141
• Image of primes (A000040) under "little Hankel" transform that sends [c_0, c_1, ...] to [d_0, d_1, ...] where d_n = c_n^2 - c_{n+1}*c_{n-1}.at n=19A056221
• McKay-Thompson series of class 30G for the Monster group.at n=37A058618
• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 3.at n=59A060022
• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 8.at n=30A060027
• Array of coefficients of polynomials p(n,x) = 2^(n-1)*Product_{i=0..n} (x - cos(i*Pi/n)) of degree (n+1) with P(-1,x) = 1, P(0,x) = 0.at n=59A076626