120340

Appears in sequences

• Number of symmetric nonnegative integer 7 X 7 matrices with sum of elements equal to 4*n, under action of dihedral group D_4.at n=13A054497
• Expansion of 1/(1-(x+x^2)c(2x)), c(x) the g.f. of A000108.at n=8A110508
• Expansion of 1/(1+x*(1-x)*c(-2*x)), c(x) the g.f. of A000108.at n=8A114190