11523584

Appears in sequences

• Let K be a local ring with a principal maximal ideal J of nilpotent degree 4 with |K/J|>2; a(n) = number of D-invariant ideals in the ring R_n(K,J).at n=9A221704
• Number of (n+2)X(4+2) 0..1 arrays with the (lower) medians of each row unequal to its neighbors and each column equal to its neighbors.at n=3A238024
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with the (lower) medians of each row unequal to its neighbors and each column equal to its neighbors.at n=24A238026
• Number of (4+2)X(n+2) 0..1 arrays with the (lower) medians of each row unequal to its neighbors and each column equal to its neighbors.at n=3A238030