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A125382 Number of base 19 circular n-digit numbers with adjacent digits differing by 5 or less. 0
1, 19, 179, 1399, 12679, 117169, 1108151, 10622169, 102843047, 1002906517, 9832026699, 96763261669, 955021583503, 9445371945561, 93558608546267, 927743558287129, 9207050413918087, 91425186769710909, 908226948062391227 (list; graph; refs; listen; history; text; internal format)
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..18.

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: A217698 A172642 A133740 * A126540 A008419 A211866

Adjacent sequences: A125379 A125380 A125381 * A125383 A125384 A125385

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified November 30 08:01 EST 2022. Contains 358435 sequences. (Running on oeis4.)