83440

Appears in sequences

• Triangle T(n,k) read by rows: number of k X k symmetric matrices with nonnegative integer entries and without zero rows or columns such that sum of all entries is equal to n, n>=1, 1<=k<=n.at n=51A138177
• Number of n X 3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).at n=3A208051
• Number of n X 4 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).at n=2A208052
• T(n,k) = Number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).at n=17A208054
• T(n,k) = Number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical or antidiagonal neighbor (colorings ignoring permutations of colors).at n=18A208054
• T(n,k)=Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of an nXk array with new integer colors introduced in row major order.at n=39A216460
• T(n,k)=Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of an nXk array with new integer colors introduced in row major order.at n=47A216460
• Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of a 3Xn array with new integer colors introduced in row major order.at n=7A216461
• Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of a 4Xn array with new integer colors introduced in row major order.at n=5A216462
• T(n,k)=Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of an nXk array with new integer colors introduced in row major order.at n=39A216612
• T(n,k)=Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of an nXk array with new integer colors introduced in row major order.at n=47A216612
• Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of a 3 X n array with new integer colors introduced in row major order.at n=7A216613