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A126551 Number of base 30 n-digit numbers with adjacent digits differing by five or less. 0
1, 30, 300, 3080, 31910, 332332, 3472294, 36356914, 381225854, 4001308564, 42025251756, 441585511330, 4641438979272, 48795642652634, 513063278382886, 5395138052943334, 56736497174383966, 596680299580096756 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+11^(n-1) for base>=5n-4; a(base,n)=a(base-1,n)+11^(n-1)-2 when base=5n-5

LINKS

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

PROG

(S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>5)+($[i+1]`-$[i]`>5))

CROSSREFS

Cf. Base 30 differing by four or less A126525, three or less A126498, two or less A126417, one or less A126384.

Sequence in context: A101381 A061605 A125393 * A042750 A074994 A134287

Adjacent sequences:  A126548 A126549 A126550 * A126552 A126553 A126554

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified August 24 18:12 EDT 2019. Contains 326295 sequences. (Running on oeis4.)