524251

Appears in sequences

• 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=18A183155
• Number of binary digits in the high-water marks of the terms of the continued fraction of the base-2 Champernowne constant.at n=18A244331
• Submain diagonal of array A265903: a(n) = A265903(n+1, n).at n=13A265909
• The difference between number of even and number of odd Grassmannian permutations of size n.at n=37A356185