Number of (n+2)X7 0..2 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.
A185473
Number of (n+2)X7 0..2 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.
Terms
- a(0) =79743a(1) =594798a(2) =3097348a(3) =12990375a(4) =46410729a(5) =146203201a(6) =416227164a(7) =1090826214a(8) =2669230399a(9) =6166331968a(10) =13566979728a(11) =28628817088a(12) =58271012854a(13) =114931139131a(14) =220496274283a(15) =412754753755a(16) =755824704746
External references
- oeis: A185473