65261

Appears in sequences

• Starting index of a string of 5 or more consecutive equal digits in decimal expansion of Pi.at n=10A049517
• Starting index of a string of exactly 5 consecutive equal digits in decimal expansion of Pi.at n=8A049521
• Starting positions of strings of four 2's in the decimal expansion of Pi.at n=8A083607
• Expansion of g.f.: (1+4*x-4*x^2)/(1-3*x-4*x^2+4*x^3).at n=8A177369
• T(n,k)=Number of ways to reciprocally link elements of an nXk array either to themselves or to exactly one horizontal, diagonal and antidiagonal neighbor.at n=46A220621