33155

Appears in sequences

• 1/4 the number of (n+1) X 3 binary arrays with all 2 X 2 subblock sums the same.at n=15A183979
• a(n) is the least k such that A261865(k) = A005117(n).at n=25A262036
• Pseudoprimes to base 7, written in base 7.at n=15A262104
• Number of unlabeled rooted trees with n nodes where all terminal rooted subtrees are either constant or strict.at n=14A316522