Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and no more than 5 ones in any row or column.
A162060
Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in nondecreasing order, and no more than 5 ones in any row or column.
Terms
- a(0) =2a(1) =6a(2) =18a(3) =100a(4) =794a(5) =10414a(6) =190428a(7) =4659387a(8) =143848365a(9) =5430367157a(10) =242216815664
External references
- oeis: A162060