Number of base 20 circular n-digit numbers with adjacent digits differing by 2 or less.
A124948
Number of base 20 circular n-digit numbers with adjacent digits differing by 2 or less.
Terms
- a(0) =1a(1) =20a(2) =94a(3) =350a(4) =1522a(5) =6670a(6) =29992a(7) =136548a(8) =628362a(9) =2914622a(10) =13606624a(11) =63855108a(12) =300982084a(13) =1423941500a(14) =6758032522a(15) =32161829650a(16) =153427657050a(17) =733475019582
External references
- oeis: A124948