Number of (n+1) X (5+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A253492
Number of (n+1) X (5+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =8501a(1) =9679a(2) =11937a(3) =18526a(4) =32652a(5) =63550a(6) =133284a(7) =296566a(8) =694572a(9) =1704910a(10) =4368564a(11) =11624806a(12) =31924092a(13) =89883070a(14) =257882244a(15) =750124246a(16) =2203339212a(17) =6515962030a(18) =19359786324a(19) =57703170886a(20) =172357147932a(21) =515566725790
External references
- oeis: A253492