33554176

Appears in sequences

• a(n) = 10*a(n-2) - 16*a(n-4) for n > 3, a(0) = 1, a(1) = 5, a(2) = 14, a(3) = 34.at n=16A083332
• Numbers whose binary representation is the concatenation of 2n-1 digits 1 and n-1 digits 0.at n=8A147590
• If an array is made of columns of -nacci sequences, fibo-, tribo- etc. all starting w. 1,1,2 etc, the NW to SE diagonals can be extended by computation. The above is diagonal 9. See A159741 for details.at n=17A159746
• Non-unitary amicable numbers.at n=40A259037
• Larger of a non-unitary amicable pair.at n=20A259039
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 617", based on the 5-celled von Neumann neighborhood.at n=24A289939
• Numbers that are either already perfect, or a perfect number is eventually reached if we start doubling them.at n=44A341622