64073

Appears in sequences

• Number of solutions to rev(x^2) = rev(x)^2 with n digits, where the rev(x) function reverses the digits of x.at n=13A098701
• Number of n X 4 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nonincreasing.at n=43A266543
• Number of compositions of n whose standard factorization into Lyndon words has all weakly increasing factors.at n=18A299026