cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A296746 Numbers whose base-11 digits d(m), d(m-1), ..., d(0) have #(rises) < #(falls); see Comments.

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%I A296746 #7 Jan 27 2023 19:24:59
%S A296746 11,22,23,33,34,35,44,45,46,47,55,56,57,58,59,66,67,68,69,70,71,77,78,
%T A296746 79,80,81,82,83,88,89,90,91,92,93,94,95,99,100,101,102,103,104,105,
%U A296746 106,107,110,111,112,113,114,115,116,117,118,119,121,132,242,253
%N A296746 Numbers whose base-11 digits d(m), d(m-1), ..., d(0) have #(rises) < #(falls); see Comments.
%C A296746 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 A296744-A296746 partition the natural numbers. See the guide at A296712.
%H A296746 Clark Kimberling, <a href="/A296746/b296746.txt">Table of n, a(n) for n = 1..10000</a>
%e A296746 The base-11 digits of 253 are 2,1,0; here #(rises) = 0 and #(falls) = 2, so 253 is in the sequence.
%t A296746 z = 200; b = 11; d[n_] := Sign[Differences[IntegerDigits[n, b]]];
%t A296746 Select[Range [z], Count[d[#], -1] == Count[d[#], 1] &] (* A296744 *)
%t A296746 Select[Range [z], Count[d[#], -1] < Count[d[#], 1] &]  (* A296745 *)
%t A296746 Select[Range [z], Count[d[#], -1] > Count[d[#], 1] &]  (* A296746 *)
%Y A296746 Cf. A296744, A296745, A296712.
%K A296746 nonn,base,easy
%O A296746 1,1
%A A296746 _Clark Kimberling_, Jan 08 2018