66920

Appears in sequences

• Values of k such that {s(1),...,s(k)} is a palindrome, where {s(1),s(2),...} is the fixed point of the substitutions 0->1 and 1->110.at n=23A098894
• Simple continued fraction expansion of an infinite product.at n=23A221073
• Nonunitary weird numbers: numbers that are nonunitary abundant but not nonunitary pseudoperfect.at n=25A327948