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A126386 Number of base 32 n-digit numbers with adjacent digits differing by one or less. 7
1, 32, 94, 278, 824, 2446, 7268, 21612, 64302, 191406, 569972, 1697824, 5058866, 15077156, 44944738, 134005046, 399611304, 1191849678, 3555217476, 10606364688, 31645944402, 94431456984, 281811640854, 841088436306 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

[Empirical] a(base,n)=a(base-1,n)+3^(n-1) for base>=n; a(base,n)=a(base-1,n)+3^(n-1)-2 when base=n-1

LINKS

Table of n, a(n) for n=0..23.

PROG

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

CROSSREFS

Sequence in context: A297730 A124804 A188184 * A208635 A259715 A195088

Adjacent sequences: A126383 A126384 A126385 * A126387 A126388 A126389

KEYWORD

nonn,base

AUTHOR

R. H. Hardin, Dec 26 2006

STATUS

approved

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Last modified November 28 20:13 EST 2022. Contains 358421 sequences. (Running on oeis4.)