Number of strings over a 5 symbol alphabet with adjacent symbols differing by three or less.
A126473
Number of strings over a 5 symbol alphabet with adjacent symbols differing by three or less.
Terms
- a(0) =1a(1) =5a(2) =23a(3) =107a(4) =497a(5) =2309a(6) =10727a(7) =49835a(8) =231521a(9) =1075589a(10) =4996919a(11) =23214443a(12) =107848529a(13) =501037445a(14) =2327695367a(15) =10813893803a(16) =50238661313a(17) =233396326661
External references
- oeis: A126473