546410

Appears in sequences

• Numbers m with even length such that phi(m)=phi(d_1^d_2*d_3^d_4*...* d_(k-1)^d_k) where d_1 d_2 ... d_k is the decimal expansion of m.at n=11A112010
• Numbers m with even length such that phi(m)=phi(d_1^d_2)*phi(d_3^d_4) *...*phi(d_(k-1)^d_k) where d_1 d_2 ... d_k is the decimal expansion of m.at n=11A112011
• Number of black/white colorings of a 3 X n rectangle which have no monochromatic 2 by 2 subsquares.at n=7A133129
• Number of nX7 binary matrices with no 2X2 circuit having pattern 0101 in any orientation.at n=2A181242
• T(n,k) = Number of n X k binary matrices with no 2 X 2 circuit having pattern 0101 in any orientation.at n=38A181245
• T(n,k) = Number of n X k binary matrices with no 2 X 2 circuit having pattern 0101 in any orientation.at n=42A181245