68191

Appears in sequences

• Minimal number of moves for the cyclic variant of the Towers of Hanoi for 3 pegs and n disks, with the final peg two steps away.at n=11A005666
• 10-gonal (or decagonal) pyramidal numbers: a(n) = n*(n + 1)*(8*n - 5)/6.at n=37A007585
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 63 ones.at n=3A031831
• Composite numbers which in base 6 contain their largest proper factor as a substring.at n=13A063156
• Odd decagonal pyramidal numbers.at n=18A218330
• Number of compositions of n such that the smallest part has multiplicity two.at n=19A241862
• Expansion of Product_{k>=1} 1/(1 - k*x^(k^2))^k.at n=38A285243