%I
%S 82,83,84,85,86,87,88,89,163,164,165,166,167,168,169,170,173,174,175,
%T 176,177,178,179,244,245,246,247,248,249,250,251,254,255,256,257,258,
%U 259,260,264,265,266,267,268,269,325,326,327,328,329,330,331,332,335
%N Numbers n whose base9 digits d(m), d(m1), ..., d(0) have #(pits) > #(peaks); see Comments.
%C A pit is an index i such that d(i1) > d(i) < d(i+1); a peak is an index i such that d(i1) < d(i) > d(i+1). The sequences A296879A296881 partition the natural numbers. See the guides at A296882 and A296712.
%H Clark Kimberling, <a href="/A296880/b296880.txt">Table of n, a(n) for n = 1..10000</a>
%e The base9 digits of 335 are 4,1,2; here #(pits) = 1 and #(peaks) = 0, so that 335 is in the sequence.
%t z = 200; b = 9;
%t d[n_] := Differences[Sign[Differences[IntegerDigits[n, b]]]];
%t Select[Range [z], Count[d[#], 2] == Count[d[#], 2] &] (* A296879 *)
%t Select[Range [z], Count[d[#], 2] < Count[d[#], 2] &] (* A296880 *)
%t Select[Range [z], Count[d[#], 2] > Count[d[#], 2] &] (* A296881 *)
%Y Cf. A296882, A296712, A296879, A296881.
%K nonn,base,easy
%O 1,1
%A _Clark Kimberling_, Jan 09 2018
