Number of n X n symmetric binary matrices with no row sum greater than 4.
A139680
Number of n X n symmetric binary matrices with no row sum greater than 4.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =64a(4) =1024a(5) =28217a(6) =1146419a(7) =62951431a(8) =4451407563a(9) =392447922178
External references
- oeis: A139680