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!)
A051208 Numbers of the form x^2-6^y >= 0. 3
0, 3, 8, 9, 10, 13, 15, 19, 24, 28, 30, 35, 40, 43, 45, 48, 58, 63, 64, 73, 75, 80, 85, 94, 99, 108, 115, 120, 133, 138, 143, 145, 148, 160, 163, 168, 184, 189, 190, 195, 219, 220, 224, 225, 250, 253, 255, 268, 283, 288, 304, 313, 318, 323, 324, 325, 355, 360, 364, 385, 394, 399 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..62.

MATHEMATICA

max = 400; Clear[f]; f[m_] := f[m] = Select[Table[x^2 - 6^y, {y, 0, m}, {x, Floor[6^(y/2)], Ceiling[Sqrt[6^y + max]]}] // Flatten // Union, 0 <= # <= max &]; f[1]; f[m = 2]; While[f[m] != f[m - 1], m++]; Print["m = ", m]; A051208 = f[m] (* Jean-Fran├žois Alcover, May 13 2017 *)

CROSSREFS

Sequence in context: A276006 A091767 A024549 * A211223 A247544 A080524

Adjacent sequences:  A051205 A051206 A051207 * A051209 A051210 A051211

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 17 14:57 EST 2020. Contains 330958 sequences. (Running on oeis4.)