A125395 Number of base 32 circular n-digit numbers with adjacent digits differing by 5 or less.

1, 32, 322, 2582, 24262, 231582, 2264020, 22435984, 224750110, 2269946654, 23077019532, 235861678040, 2421311651824, 24948931934504, 257880638608460, 2672736469957992, 27765463773130590, 289023466154180810

Offset

0,2

Comments

[Empirical] a(base,n)=a(base-1,n)+F(5) for base>=5.int(n/2)+1 and F(d) is the largest coefficient in (1+x+...+x^(2d))^n

Links

Table of n, a(n) for n=0..17.

Prog

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>5)+($[(i+1)mod N]`-$[i]`>5))

Crossrefs

Sequence in context: A095152 A087342 A083468 * A126553 A368621 A221661

Adjacent sequences: A125392 A125393 A125394 * A125396 A125397 A125398

Keyword

nonn,base

Author

R. H. Hardin, Dec 28 2006

Status

approved