Combinatorics / CONCEPT

Intervals and simplicity in the terminal families

For n at least four, R(n) is a permutation of size n in C ending in its minimum. Its proper nontrivial intervals are exactly the prefix of length n minus one with values from two through n and, when n is even, the second and third entries with values n minus one and n. Moreover, Y(n+1) is a simple permutation of size n + 1 in C.