90185

Appears in sequences

• Sort then Add, a(1)=13.at n=15A033897
• Half the number of (n+1) X 3 binary arrays with no 2 X 2 subblock containing exactly one 1.at n=5A184190
• Half the number of (n+1)X7 binary arrays with no 2X2 subblock containing exactly one 1.at n=1A184194
• T(n,k)=Half the number of (n+1)X(k+1) binary arrays with no 2X2 subblock containing exactly one 1.at n=22A184197
• T(n,k)=Half the number of (n+1)X(k+1) binary arrays with no 2X2 subblock containing exactly one 1.at n=26A184197
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero.at n=13A304266
• Number of non-isomorphic 5 X 5 nonnegative integer symmetric matrices with all row and column sums equal to n up to permutations of rows and columns.at n=10A333887