A125361 Number of base 24 circular n-digit numbers with adjacent digits differing by 4 or less.

1, 24, 196, 1284, 9836, 76524, 609940, 4928052, 40249964, 331447308, 2747281456, 22892351528, 191590111316, 1609306726532, 13559412142738, 114546085965354, 969826269069116, 8227091944066248, 69907440585587662, 594878380136137122

Offset

0,2

Comments

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

Links

Table of n, a(n) for n=0..19.

Prog

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>4)+($[(i+1)mod N]`-$[i]`>4))

Crossrefs

Sequence in context: A282286 A123197 A211151 * A126519 A260358 A198396

Adjacent sequences: A125358 A125359 A125360 * A125362 A125363 A125364

Keyword

nonn,base

Author

R. H. Hardin, Dec 28 2006

Status

approved