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A037823
Number of i such that d(i) > d(i-1), where Sum_{i=0..m} d(i)*8^i is the base-8 representation of n.
2
0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1
OFFSET
1,136
EXAMPLE
136 is written as 210 in base 8, and we have 2 inequalities 2>1 and 1>0, so a(136) = 2.
MAPLE
A037823 := proc(n)
a := 0 ;
dgs := convert(n, base, 8);
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 16 2015
CROSSREFS
Cf. A037806.
Sequence in context: A064873 A295659 A188436 * A293162 A115790 A025460
KEYWORD
nonn,base
EXTENSIONS
Sign in name corrected by R. J. Mathar, Oct 16 2015
STATUS
approved