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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
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
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: A360436 A124804 A188184 * A208635 A259715 A195088
KEYWORD
nonn,base
AUTHOR
R. H. Hardin, Dec 26 2006
STATUS
approved