27507

Appears in sequences

• Related to self-avoiding walks on square lattice.at n=8A006815
• Number of partitions p of n for which Odd(p) = Odd(p') (mod 4), where p' is the conjugate of p.at n=43A097566
• Expansion of x*(1+2*x)/(1+x+x^2-2*x^3).at n=28A103749
• a(n) = 52*n^2 - 1.at n=22A158640
• Number of length n+1 0..2 arrays with the sum of the maximum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.at n=8A250640
• Partial sums of A299268.at n=25A299269
• 1/(Integral_{x=0..1} x^(x^(x^n)) dx - 1/2), rounded to the nearest integer.at n=36A322009
• G.f. A(x) satisfies 1/x^19 = Sum_{n=-oo..+oo} A(x)^n * x^n * (1 - x^n)^(n+8).at n=6A384824