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A296698 Numbers n whose base-5 digits d(m), d(m-1), ... d(0) have #(rises) > #(falls); see Comments. 4
7, 8, 9, 13, 14, 19, 32, 33, 34, 37, 38, 39, 43, 44, 49, 63, 64, 68, 69, 74, 94, 99, 132, 133, 134, 138, 139, 144, 157, 158, 159, 162, 163, 164, 168, 169, 174, 176, 177, 178, 179, 182, 183, 184, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A rise is an index i such that d(i) < d(i+1); a fall is an index i such that d(i) > d(i+1). The sequences A296697-A296699 partition the natural numbers. See the guide at A296712.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

EXAMPLE

The base-5 digits of 199 are 1,2,4,4; here #(rises) = 2 and #(falls) = 0, so that 199 is in the sequence.

MATHEMATICA

z = 200; b = 5; d[n_] := Sign[Differences[IntegerDigits[n, b]]];

Select[Range [z], Count[d[#], -1] == Count[d[#], 1] &] (* A296697 *)

Select[Range [z], Count[d[#], -1] < Count[d[#], 1] &]  (* A296698 *)

Select[Range [z], Count[d[#], -1] > Count[d[#], 1] &]  (* A296699 *)

CROSSREFS

Cf. A296697, A296699, A296712.

Sequence in context: A309152 A170933 A297257 * A297131 A289740 A289760

Adjacent sequences:  A296695 A296696 A296697 * A296699 A296700 A296701

KEYWORD

nonn,base

AUTHOR

Clark Kimberling, Dec 21 2017

STATUS

approved

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Last modified November 19 16:06 EST 2019. Contains 329320 sequences. (Running on oeis4.)