login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A299117 Sorted terms of A277781. 1
4, 8, 9, 16, 18, 24, 25, 27, 32, 36, 40, 48, 49, 50, 54, 56, 64, 72, 75, 80, 81, 88, 96, 98, 100, 104, 108, 112, 120, 121, 125, 128, 135, 136, 144, 147, 152, 160, 162, 168, 169, 176, 180, 184, 189, 192, 196, 200, 208, 216, 224, 225, 232, 240, 242, 243, 245 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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

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

LINKS

Peter Kagey, Table of n, a(n) for n = 1..1000

MATHEMATICA

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 *)

CROSSREFS

Cf. A013929, A072905, A277781.

Sequence in context: A034023 A086368 A034024 * A339462 A140269 A339744

Adjacent sequences:  A299114 A299115 A299116 * A299118 A299119 A299120

KEYWORD

nonn

AUTHOR

Peter Kagey, Feb 02 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 22 00:28 EDT 2021. Contains 345367 sequences. (Running on oeis4.)