73568
domain: N
Appears in sequences
- Number of triangles a queen can make (starting anywhere) on an n X n board.at n=33A030117
- Greatest number (in decimal representation) with n nonprime substrings in base-5 representation (substrings with leading zeros are considered to be nonprime).at n=12A217115
- a(n) = n*(n+1)*(13*n+2)/6.at n=32A257093
- Number of nX6 binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=3A269009
- T(n,k)=Number of nXk binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=39A269011
- Number of 4 X n binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two exactly once.at n=5A269014
- Numbers that are values of the totient function (A002202) but not of the reduced totient function (A002174).at n=24A270265