27464

Appears in sequences

• Riordan matrix (1/(x+sqrt(1-4x)),(1-sqrt(1-4x))/(2(x+sqrt(1-4x)))).at n=47A188513
• Number of -3..3 arrays x(i) of n+1 elements i=1..n+1 with x(i)+x(j), x(i+1)+x(j+1), -(x(i)+x(j+1)), and -(x(i+1)+x(j)) having three distinct values for every i<=n and j<=n.at n=10A211498
• Number of partitions p of n such that median(p) >= multiplicity(min(p)).at n=43A240216
• Number of North-East lattice paths from (0,0) to (n,n) that bounce off the diagonal y = x to the right exactly twice.at n=7A268400
• Expansion of Product_{k>=1} (1 + x^k)^(sigma_0(k)^2).at n=16A301746
• Number of n-digit primes in A104179.at n=18A376433