53167

Appears in sequences

• Next-to-middle coefficient in expansion of Product_{k=1..n} (1 + x^k).at n=21A068202
• Number of solutions to +- 1 +- 2 +- .. +- n = 3.at n=22A113037
• a(n) = A000041(n) - A032741(n).at n=42A167934
• Numbers k such that 3^k + 26 is prime.at n=36A219044
• Number of (n+1) X (n+1) 0..2 arrays with the maximum plus the upper median plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=2A237404
• Number of (n+1) X (3+1) 0..2 arrays with the maximum plus the upper median plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=2A237407
• T(n,k)=Number of (n+1) X (k+1) 0..2 arrays with the maximum plus the upper median plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=12A237412
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 169", based on the 5-celled von Neumann neighborhood.at n=30A286173