Number of (n+1) X (4+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.
A232402
Number of (n+1) X (4+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.
Terms
- a(0) =16a(1) =72a(2) =176a(3) =1120a(4) =2788a(5) =16884a(6) =44528a(7) =255432a(8) =706796a(9) =3869856a(10) =11187884a(11) =58747800a(12) =176480560a(13) =893567100a(14) =2775528020a(15) =13614481384a(16) =43541140184a(17) =207746258444a(18) =681590483408
External references
- oeis: A232402