4194261

Appears in sequences

• a(n) = 4*A061547(n+1) - 3*A166753(n).at n=20A166754
• The number of order-preserving partial isometries (of an n-chain) of fix zero (fix of alpha = 0). Equivalently, the number of order-preserving partial derangement isometries (of an n-chain).at n=21A183155
• Number of binary digits in the high-water marks of the terms of the continued fraction of the base-2 Champernowne constant.at n=21A244331
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 51", based on the 5-celled von Neumann neighborhood.at n=21A278594
• The real part of b(n) where b(n) = (n + b(n-1)) * (1 + i) with b(-1)=0; i = sqrt(-1).at n=43A309878
• The difference between number of even and number of odd Grassmannian permutations of size n.at n=43A356185