660602880
domain: N
Appears in sequences
- Expansion of tan(sinh(x))*exp(x).at n=13A009681
- Expansion of tanh(sin(x))*cos(x).at n=6A009793
- Number of 4 X 4 matrices whose determinant is 1 mod n.at n=3A011786
- Number of n X n matrices over Z_4 whose determinant is 1.at n=3A011787
- Number of n X n matrices whose determinant is 1 mod n.at n=3A011788
- a(n) is the n-th quartic factorial number divided by 4.at n=7A034177
- Triangle of coefficients of certain exponential convolution polynomials.at n=28A048786
- E.g.f.: x/(1-4*x).at n=8A052570
- 4th-order non-linear ("factorial") recursion: a(0)=a(1)=a(2)=a(3)=1, a(n) = (n+1)*a(n-4).at n=31A081407
- a(n) = 2^((n^2-n-2)/2)*(n+2)!at n=6A185970
- a(n) is the number of numbers whose largest prime power factor equals A000961(n).at n=36A305215
- Array read by antidiagonals: T(n,k) is the order of the group SL(n,Z_k).at n=32A316623
- a(n) = Product_{k=0..n-1} (n+4*k+1).at n=7A384258