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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A051214 Numbers of the form 3^x-y^2 >= 0. 3
0, 1, 2, 3, 5, 8, 9, 11, 17, 18, 23, 26, 27, 32, 45, 47, 53, 56, 65, 71, 72, 74, 77, 80, 81, 83, 99, 104, 122, 143, 153, 161, 162, 179, 194, 200, 207, 218, 227, 234, 239, 242, 243, 245, 251, 288, 320, 329, 338, 362, 368, 405, 423, 440, 473, 477, 485, 504, 506, 533 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1331

MATHEMATICA

max = 1000; Clear[f]; f[m_] := f[m] = Select[Table[3^x - y^2, {x, 0, m}, {y, 0, Ceiling[3^(x/2)]}] // Flatten // Union, 0 <= # <= max &]; f[1]; f[m = 2]; While[f[m] != f[m - 1], m++]; Print["m = ", m]; A051214 = f[m] (* Jean-Fran├žois Alcover, May 14 2017 *)

CROSSREFS

Cf. A201124.

Sequence in context: A047254 A226815 A284890 * A256722 A192391 A013634

Adjacent sequences:  A051211 A051212 A051213 * A051215 A051216 A051217

KEYWORD

nonn

AUTHOR

David W. Wilson

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 January 19 03:54 EST 2020. Contains 331031 sequences. (Running on oeis4.)