128773

Appears in sequences

• Starting with a(0) = 1, smallest squarefree number k such that, for all a(m), m < n, k + a(m) is not squarefree.at n=14A077225
• Starting with a(0) = 1, smallest number k > a(n-1) such that, for all a(m) with m < n, k + a(m) is not squarefree.at n=16A080793
• Brilliant star numbers: semiprimes of the form 6n^2 - 6n + 1 such that both prime factors have the same number of decimal digits.at n=14A083749
• Number of binary words of length n which have no 0^b 1 1 0^a 1 0 1 0^b - matches, where a=0, b=2.at n=17A234590