150234

Appears in sequences

• Number of (n+2)X4 binary arrays with each 3X3 subblock nonsingular.at n=3A185527
• Number of (n+2)X6 binary arrays with each 3X3 subblock nonsingular.at n=1A185529
• T(n,k)=Number of (n+2)X(k+2) binary arrays with each 3X3 subblock nonsingular.at n=11A185534
• T(n,k)=Number of (n+2)X(k+2) binary arrays with each 3X3 subblock nonsingular.at n=13A185534
• Numbers n for which there exists k < n such that A000203(k) = A000203(n) and A007947(k) = A007947(n), where A000203 gives the sum of divisors, and A007947 gives the squarefree kernel of n.at n=22A255335
• The least number k > A255334(n) for which A000203(k) = A000203(A255334(n)) and A007947(k) = A007947(A255334(n)), where A000203 gives the sum of divisors, and A007947 gives the squarefree kernel of n.at n=22A255423