A126500 Number of base 32 n-digit numbers with adjacent digits differing by three or less.

1, 32, 212, 1428, 9676, 65800, 448524, 3062596, 20939104, 143307908, 981612296, 6728277248, 46143758054, 316613006372, 2173302900418, 14923204166476, 102502175850752, 704231575697316, 4839430076086740, 33262613275263868

Offset: 0

Author

R. H. Hardin, Dec 27 2006

Keywords

• nonn
• base

Comments

[Empirical] a(base,n)=a(base-1,n)+7^(n-1) for base>=3n-2; a(base,n)=a(base-1,n)+7^(n-1)-2 when base=3n-3

Crossrefs

Cf. Base 32 differing by two or less A126419, one or less A126386.