A125358 Number of base 21 circular n-digit numbers with adjacent digits differing by 4 or less.

1, 21, 169, 1101, 8369, 64671, 511957, 4108671, 33331889, 272616609, 2244091579, 18568201871, 154285123493, 1286408940149, 10756655080753, 90159207784161, 757192897525073, 6369787770505701, 53659598197631131, 452559057596166759

Offset: 0

Author

R. H. Hardin, Dec 28 2006

Keywords

• nonn
• base

Comments

[Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1

Links

• OEIS Wiki, Number of base k circular n-digit numbers with adjacent digits differing by d or less