3243531

Appears in sequences

• Number of strictly increasing arrangements of n numbers in -(n+2)..(n+2) with sum zero.at n=12A188176
• Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-4.at n=6A211913
• T(n,k)=Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-k-1.at n=42A211916