80518

Appears in sequences

• Decimal part of a(n)^(1/2) starts with a 'nine digits' anagram.at n=26A034277
• Number of ways to partition an n X 6 grid into 2 connected equal-area regions.at n=5A167252
• Square array read by antidiagonals: T(n,m) = number of ways to partition an nXm grid into 2 connected equal-area regions.at n=60A167279
• Number of (n+1) X 3 0..3 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order.at n=3A204566
• Number of (n+1)X5 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order.at n=1A204568
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order.at n=11A204572
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order.at n=13A204572
• Irregular triangle read by rows: T(n,k) (n >= 1, 1 <= k <= n^2) is the number of ways to tile an n X n chessboard with k rook-connected polyominoes of equal area.at n=56A348452
• Irregular triangle read by rows: T(n,k) (n >= 1, 1 <= k <= number of divisors of n^2) is the number of ways to tile an n X n chessboard with d_k rook-connected polyominoes of equal area, where d_k is the k-th divisor of n^2.at n=16A348453
• Irregular triangle read by rows: T(n,k) (n >= 1, 1 <= k <= n^2) is the number of ways to tile an n X n chessboard with rook-connected polyominoes of area k.at n=72A348454
• Irregular triangle read by rows: T(n,k) (n >= 1, 1 <= k <= number of divisors of n^2) is the number of ways to tile an n X n chessboard with rook-connected polyominoes of area d_k, where d_k is the k-th divisor of n^2.at n=22A348455
• Number of ways to dissect a 2*n X 2*n chessboard into two polyominoes each of area 2*n^2.at n=3A348456