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 A299117 Sorted terms of A277781. 1

%I

%S 4,8,9,16,18,24,25,27,32,36,40,48,49,50,54,56,64,72,75,80,81,88,96,98,

%T 100,104,108,112,120,121,125,128,135,136,144,147,152,160,162,168,169,

%U 176,180,184,189,192,196,200,208,216,224,225,232,240,242,243,245

%N Sorted terms of A277781.

%C It appears that all of these numbers are nonsquarefree (i.e., this sequence is a subsequence of A013929).

%C This sequence is to A277781 what A013929 is to A072905. That is, A277781 is a bijection from the positive integers to this sequence.

%H Peter Kagey, <a href="/A299117/b299117.txt">Table of n, a(n) for n = 1..1000</a>

%t With[{nn = 57}, Take[#, nn] &@ Sort@ Table[SelectFirst[n + Range[7 + n^2], AnyTrue[Power[#, 1/3] & /@ {n #, n #^2}, IntegerQ] &], {n, 8 nn}]] (* _Michael De Vlieger_, Feb 03 2018 *)

%Y Cf. A013929, A072905, A277781.

%K nonn

%O 1,1

%A _Peter Kagey_, Feb 02 2018

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Last modified August 5 03:00 EDT 2021. Contains 346457 sequences. (Running on oeis4.)