52108

Appears in sequences

• Number of ways to use the elements of {1,..,k}, 0<=k<=2n, once each to form a collection of n (possibly empty) lists, each of length at most 2.at n=5A105747
• Subsequence of lesser of 2 terms of A095301 that are 2 apart.at n=15A248083
• Partition the decimal expansion of Pi into non-overlapping strings of length 10: 3141592653, 5897932384,..; a(n) is the position of the strings where digits are different from each other.at n=15A329368