22263

Appears in sequences

• Total diameter of unlabeled trees with n nodes.at n=13A001851
• Smallest value of k for which the expression k*2^(2^n-1)-1 is prime.at n=14A057160
• Numbers n such that (n+j) mod (2+j) = 1 for j from 0 to 5 and (n+6) mod 8 <> 1.at n=26A096024
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only either as two by three or three by two blocks.at n=11A146155
• a(n) = 46*n^2 - 1.at n=21A158634
• Numbers k such that lambda(k) = lambda(k+2), where lambda is the Carmichael lambda function (A002322).at n=28A333742