25034

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 81.at n=28A020420
• a(n) = T(2n,n), where T is the array in A026268.at n=7A026292
• a(n) = T(n,[ n/2 ]), where T is the array in A026268.at n=14A026297
• a(n)^3 ends in n^3.at n=34A167178
• Smaller of two consecutive semiprimes which are anagrams of each other.at n=10A228135
• Consider the graph with one central vertex connected to three outer vertices (a star graph). Then, a(n) is the minimum number of moves required to transfer a stack of n pegs from one outer vertex to another outer vertex, moving pegs to adjacent vertices, following the rules of the Towers of Hanoi.at n=42A291876
• Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=6A300262
• Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=2A300266
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=38A300267
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=42A300267