498520

Appears in sequences

• a(n) = T(n,m) + T(n,m+1) + ... + T(n,n), m=[ (n+1)/2 ], T given by A026769.at n=18A026891
• Number of nX3 0..n+3-2 arrays with upper left zero and lower right n+3-2 and each element differing from its diagonal and antidiagonal neighbors by one or two.at n=4A265475
• Number of nX5 0..n+5-2 arrays with upper left zero and lower right n+5-2 and each element differing from its diagonal and antidiagonal neighbors by one or two.at n=2A265477
• T(n,k)=Number of nXk 0..n+k-2 arrays with upper left zero and lower right n+k-2 and each element differing from its diagonal and antidiagonal neighbors by one or two.at n=23A265480
• T(n,k)=Number of nXk 0..n+k-2 arrays with upper left zero and lower right n+k-2 and each element differing from its diagonal and antidiagonal neighbors by one or two.at n=25A265480