Number of (n+1) X (6+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.
A253157
Number of (n+1) X (6+1) 0..1 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.
Terms
- a(0) =325a(1) =336a(2) =345a(3) =380a(4) =452a(5) =596a(6) =884a(7) =1460a(8) =2612a(9) =4916a(10) =9524a(11) =18740a(12) =37172a(13) =74036a(14) =147764a(15) =295220a(16) =590132a(17) =1179956a(18) =2359604a(19) =4718900a(20) =9437492a(21) =18874676a(22) =37749044a(23) =75497780a(24) =150995252a(25) =301990196a(26) =603980084a(27) =1207959860a(28) =2415919412a(29) =4831838516
External references
- oeis: A253157