26213

Appears in sequences

• Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 24.at n=60A051965
• a(n) = 2*a(n-1) - a(n-2) + 2*a(n-3).at n=15A133190
• Number of length n binary sequences with at most 2 of every adjacent 6 bits set.at n=22A133523
• Concatenate n-th composite number with concatenation of its prime factors in ascending order.at n=15A245315
• a(n) is the number of ordered ways to tile a strip of length n+2 with white tiles of odd lengths summing to length n and two red squares.at n=15A276129
• Numbers formed by concatenating n with the distinct prime factors of n, left to right, smallest factors to largest, with a(1) = 10.at n=25A367918