65152

Appears in sequences

• Composite c such that sigma(c)==2 (mod phi(c)).at n=6A067192
• Numbers in A086473 corresponding to the unique product of two numbers having the unique sum of A086533.at n=20A086860
• a(n) = Sum_{k=0..n} 2^max(k, n-k).at n=14A107659
• Number of 5-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=19A187300
• Arises in enumerating Huffman codes, compact trees, and sums of unit fractions.at n=18A194632
• Row sums of A285117: a(n) = 2 + Sum_{k=1..(n-1)} C(n-1,k-1) XOR C(n-1,k), a(0) = 1, a(1) = 2.at n=17A285114