Number of base 20 n-digit numbers with adjacent digits differing by three or less.
A126488
Number of base 20 n-digit numbers with adjacent digits differing by three or less.
Terms
- a(0) =1a(1) =20a(2) =128a(3) =840a(4) =5560a(5) =36988a(6) =246840a(7) =1650808a(8) =11056590a(9) =74130748a(10) =497387482a(11) =3339002940a(12) =22423219250a(13) =150623072388
External references
- oeis: A126488