172216

Appears in sequences

• Let S denote the palindromes in the language {0,1,2,...,n-1}*; a(n) = number of words of length 4 in the language SS.at n=43A187277
• Number of nX3 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=8A280119
• Number of sets of nonempty sets of nonempty multisets of positive integers with total sum n.at n=15A330454