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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A269569 Numbers k such that k+s+c is a square, where s is the nearest square to k and c is the nearest cube to k. 0
0, 2, 4, 8, 29, 37, 45, 56, 68, 80, 92, 99, 115, 235, 257, 279, 413, 593, 751, 791, 831, 909, 955, 1001, 1396, 1450, 1504, 1572, 1961, 2019, 2087, 2500, 2576, 3093, 3634, 3720, 4129, 4223, 4317, 4522, 4624, 4726, 5816, 5928, 6040, 7110, 7232, 7354, 7535, 7665, 8368, 8500 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..52.

EXAMPLE

The square nearest to 8 is 9, the cube nearest to 8 is 8. Because 8+8+9 is a square, 8 is in the sequence.

The square nearest to 29 is 25, the cube nearest to 29 is 27. Because 29+25+27 is a square, 29 is in the sequence.

CROSSREFS

Cf. A000290, A000578, A238456, A238489.

Sequence in context: A134316 A049461 A103791 * A018346 A006398 A053364

Adjacent sequences:  A269566 A269567 A269568 * A269570 A269571 A269572

KEYWORD

nonn

AUTHOR

Alex Ratushnyak, Feb 29 2016

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 December 1 04:02 EST 2021. Contains 349426 sequences. (Running on oeis4.)