18117
domain: N
Appears in sequences
- Number of nX3 0..2 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.at n=3A232276
- T(n,k)=Number of nXk 0..2 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.at n=18A232281
- Number of 4Xn 0..2 arrays with no element less than a strict majority of its horizontal, diagonal and antidiagonal neighbors.at n=2A232284
- Numbers that are the sum of eight fourth powers in eight or more ways.at n=22A345583
- Numbers that are the sum of eight fourth powers in exactly eight ways.at n=15A345840
- a(n) = Sum_{j=1..n} Sum_{k=1..n} gcd(j*k,n).at n=44A372881
- Numbers k such that A383844(k) and A383844(k+1) are nonzero.at n=46A384310