135872

Appears in sequences

• Number of (n+2)X6 0..1 matrices with each 3X3 subblock having the same population.at n=5A224647
• Number of (n+2)X8 0..1 matrices with each 3X3 subblock having the same population.at n=3A224649
• Expansion of e.g.f. Product_{k>=1} ((1 + x^k)/(1 - x^k))^(phi(k)/k), where phi is the Euler totient function A000010.at n=7A318976
• Expansion of e.g.f. exp( (1 - (1+x)^4)/4 ).at n=9A369755