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.

A274191 Numbers that are a product of distinct numbers in A022086.

This page as a plain text file.
%I A274191 #6 Mar 10 2023 13:32:51
%S A274191 3,6,9,15,18,24,27,39,45,54,63,72,90,102,117,135,144,162,165,189,216,
%T A274191 234,267,270,306,351,360,378,405,432,495,567,585,612,648,699,702,801,
%U A274191 810,918,936,945,990,1053,1080,1131,1134,1296,1485,1512,1530,1602,1701
%N A274191 Numbers that are a product of distinct numbers in A022086.
%C A274191 See the Comment on distinct-product sequences in A160009.
%H A274191 Clark Kimberling, <a href="/A274191/b274191.txt">Table of n, a(n) for n = 1..1000</a>
%e A274191 17 = 3*6; 405 = 3*9*15.
%t A274191 f[1] = 3; f[2] = 6; z = 33; f[n_] := f[n - 1] + f[n - 2]; f = Table[f[n], {n, 1, z}]; f
%t A274191 s = {1}; Do[s = Union[s, Select[s*f[[i]], # <= f[[z]] &]], {i, z}]; s1 = Rest[s]
%Y A274191 Cf. A022086, A160009, A274288.
%K A274191 nonn,easy
%O A274191 1,1
%A A274191 _Clark Kimberling_, Jun 17 2016