42722

Appears in sequences

• a(n) = sigma_3(n) - sigma_2(n) - sigma_1(n).at n=33A092350
• G.f.: exp( Sum_{n>=1} 2^A090740(n) * x^n/n ) where A090740(n) = highest exponent of 2 in 3^n-1.at n=29A182000
• The number of edges in a graph induced by a regular drawing of K_{n,n}.at n=19A290132
• Minimal number of moves for the cyclic variant of Hanoi's tower for 4 pegs and n disks, with the final peg two steps away.at n=16A292764