Number of (n+1) X (4+1) 0..1 arrays with the sum of each 2 X 2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.
A235769
Number of (n+1) X (4+1) 0..1 arrays with the sum of each 2 X 2 subblock two extreme terms minus its two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.
Terms
- a(0) =288a(1) =1948a(2) =12417a(3) =70752a(4) =377890a(5) =1874171a(6) =8783904a(7) =38884279a(8) =163704284a(9) =657363226a(10) =2525936111a(11) =9324137986a(12) =33129297593a(13) =113732864597a(14) =377785457375
External references
- oeis: A235769