-5852

Appears in sequences

• a(n) = (2^n/n!)*Product_{k=0..n-1} (4*k - 1).at n=6A004984
• Inverse Euler transform of n^2.at n=17A316152
• a(n) = coefficient of x^(2*n) in A(x) = 1 + Sum_{n>=1} (-1)^n * x^(4*n^2) * (F(x/2)^(2*n) + F(-x/2)^(2*n)), where F(x) is the g.f. of A357787.at n=19A357806