268435464

Appears in sequences

• Number of ways of 4-coloring a map in which there is a central circle surrounded by an annulus divided into n-1 regions. There are n regions in all.at n=23A090860
• a(n) = 8*(2^n + 1).at n=25A175161
• Products of the Jacobsthal numbers and the integers: a(n) = n * A001045(n+1).at n=24A193449
• a(n) = 2^n + 8.at n=28A242475
• Number of fundamentally different graceful labelings of the complete tripartite graph K_{1,1,n}.at n=28A339891