80642

Appears in sequences

• Lexically least increasing sequence such that the sum of any nonempty subsequence is not a square.at n=13A133662
• Number of 2 X 2 nonsingular 0..n matrices with a(1,1) <= a(1,2) <= a(2,1) <= a(2,2).at n=34A183763
• Sequence defined by a(1)=a(2)=1 and a(n) = gray(a(n-1)) + gray(a(n-2)), with gray(m) = A003188(m).at n=17A265387