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A126552 Number of base 31 n-digit numbers with adjacent digits differing by five or less. 0
1, 31, 311, 3201, 33241, 346973, 3633345, 38128475, 400712365, 4215612885, 44381119457, 467467444891, 4925548461045, 51911345979157, 547195680951947, 5768641876348183, 60819051384616763, 641254077894118141 (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 31 differing by four or less A126526, three or less A126499, two or less A126418, one or less A126385.

Sequence in context: A125394 A200913 A212235 * A068813 A221306 A142382

Adjacent sequences:  A126549 A126550 A126551 * A126553 A126554 A126555

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 28 2006

STATUS

approved

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Last modified November 14 12:21 EST 2019. Contains 329114 sequences. (Running on oeis4.)