login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A046039 Numbers which cannot be represented as a sum of distinct 4th powers. 2
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Last term is a(889576) = 5134240. [Charles R Greathouse IV, Feb 26 2012]

LINKS

Table of n, a(n) for n=1..71.

Eric Weisstein's World of Mathematics, Biquadratic Number

MATHEMATICA

max = 2000; f[x_] := Product[1 + x^(k^4), {k, 1, 10}]; A003999 = Exponent[#, x]& /@ List @@ Normal[Series[f[x], {x, 0, max}]] // Rest; A046039 = Complement[Range[max], A003999][[1 ;; 71]](* Jean-Fran├žois Alcover, Nov 09 2012, after Charles R Greathouse IV *)

CROSSREFS

Cf. A001422, A001476. Complement of A003999.

Sequence in context: A048327 A048340 A098312 * A023784 A028823 A074739

Adjacent sequences:  A046036 A046037 A046038 * A046040 A046041 A046042

KEYWORD

nonn,fini

AUTHOR

Eric W. Weisstein

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified November 21 07:19 EST 2014. Contains 249769 sequences.