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A037830
Number of i such that d(i) >= d(i-1), where Sum_{i=0..m} d(i)*7^i is the base-7 representation of n.
2
0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0
OFFSET
1,49
MAPLE
A037830 := proc(n)
a := 0 ;
dgs := convert(n, base, 7);
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. A037814.
Sequence in context: A030421 A085021 A060209 * A174353 A319582 A187447
KEYWORD
nonn,base
EXTENSIONS
Sign in Name corrected by R. J. Mathar, Oct 16 2015
STATUS
approved