2970965

Appears in sequences

• a(n) = 4*a(n-1) + 1, a(1)=11.at n=9A072262
• Decimal representation of the middle column of the "Rule 59" elementary cellular automaton starting with a single ON (black) cell.at n=21A266721
• Array A read by upward antidiagonals in which the entry A(n,k) in row n and column k is defined by A(n, k) = 4^n*(6*k - 3 - 2*(-1)^n) + (4^n - 1)/3, n,k >= 1.at n=46A371100