Number of n X 5 0..1 arrays with rows unimodal and antidiagonals nondecreasing.
A224406
Number of n X 5 0..1 arrays with rows unimodal and antidiagonals nondecreasing.
Terms
- a(0) =16a(1) =101a(2) =465a(3) =1928a(4) =7812a(5) =31710a(6) =129402a(7) =529846a(8) =2172346a(9) =8908986a(10) =36534670a(11) =149811438a(12) =614276002a(13) =2518688490a(14) =10327233902a(15) =42344211246a(16) =173621959826a(17) =711894378346
External references
- oeis: A224406