Number of (n+1) X 5 0..1 arrays with the permanents of all 2 X 2 subblocks equal and nonzero.
A204709
Number of (n+1) X 5 0..1 arrays with the permanents of all 2 X 2 subblocks equal and nonzero.
Terms
- a(0) =49a(1) =209a(2) =833a(3) =3473a(4) =14145a(5) =58449a(6) =239425a(7) =986129a(8) =4047681a(9) =16650449a(10) =68397889a(11) =281218705a(12) =1155579713a(13) =4750209361a(14) =19522035521a(15) =80241997073a(16) =329789811521
External references
- oeis: A204709