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A046044
Sum of 13 but no fewer nonzero fourth powers.
6
13, 28, 43, 58, 73, 93, 108, 123, 138, 153, 173, 188, 203, 208, 218, 233, 253, 268, 283, 298, 313, 333, 348, 363, 378, 393, 413, 428, 443, 448, 458, 473, 493, 508, 523, 538, 553, 573, 588, 603, 618, 637, 653, 668, 683, 688, 698, 717, 733, 748, 763, 778, 797
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Biquadratic Number.
MATHEMATICA
isSumQ[n_] := Do[pr = PowersRepresentations[n, k, 4]; If[k < 13, If[pr != {} , Return[False]], If[k == 13 && pr != {}, Return[True], Return[False]]], {k, 1, 13}]; Reap[For[n = 1, n <= 800, n++, If[isSumQ[n], Print[n]; Sow[n]]]][[2, 1]] (* Jean-François Alcover, Oct 25 2012 *)
CROSSREFS
KEYWORD
nonn
EXTENSIONS
More terms from Arlin Anderson (starship1(AT)gmail.com)
STATUS
approved