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A037801 Number of i such that d(i)<d(i-1), where Sum{d(i)*3^i: i=0,1,...,m} is base 3 representation of n. 2
0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 0, 1, 1, 1, 1, 2, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,32
LINKS
MAPLE
A037801 := proc(n)
a := 0 ;
dgs := convert(n, base, 3);
for i from 2 to nops(dgs) do
if op(i, dgs)<op(i-1, dgs) then
a := a+1 ;
end if;
end do:
a ;
end proc: # R. J. Mathar, Oct 15 2015
CROSSREFS
Sequence in context: A353423 A037907 A365167 * A340219 A260413 A053252
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
Sign in name corrected by R. J. Mathar, Oct 15 2015
STATUS
approved

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)