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.

A345359 Lexicographically earliest sequence of distinct nonnegative integers such that the product of two terms, not necessarily distinct, can be computed without carry in base 3.

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%I A345359 #11 Jun 21 2021 03:04:59
%S A345359 0,1,3,4,9,10,12,27,28,30,31,36,81,82,84,85,90,93,108,243,244,246,247,
%T A345359 252,253,255,270,279,324,729,730,732,733,738,739,741,756,759,765,810,
%U A345359 837,972,2187,2188,2190,2191,2196,2197,2199,2214,2215,2217,2218,2223
%N A345359 Lexicographically earliest sequence of distinct nonnegative integers such that the product of two terms, not necessarily distinct, can be computed without carry in base 3.
%C A345359 All terms belong to A005836.
%C A345359 If m is a term, then 3*m is also a term (in particular, all powers of 3 appear in the sequence).
%C A345359 The representation of the 1's in the ternary expansion of consecutive terms has interesting features (see illustration in Links section).
%H A345359 Rémy Sigrist, <a href="/A345359/b345359.txt">Table of n, a(n) for n = 1..2500</a>
%H A345359 Rémy Sigrist, <a href="/A345359/a345359.png">Binary plot of (n, A289831(a(n))) for n = 1..255</a> (representation of the 1's in the ternary expansion of the first 255 terms)
%H A345359 Rémy Sigrist, <a href="/A345359/a345359.gp.txt">PARI program for A345359</a>
%F A345359 A053735(a(m) * a(n)) = A053735(a(m)) * A053735(a(n)).
%o A345359 (PARI) See Links section.
%Y A345359 Cf. A005836, A053735, A131577 (binary analog), A289831, A345358 (decimal analog).
%K A345359 nonn,base
%O A345359 1,3
%A A345359 _Rémy Sigrist_, Jun 16 2021