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A004836
Numbers that are the sum of at most 7 nonzero 4th powers.
1
0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 32, 33, 34, 35, 36, 37, 48, 49, 50, 51, 52, 64, 65, 66, 67, 80, 81, 82, 83, 84, 85, 86, 87, 96, 97, 98, 99, 100, 101, 102, 112, 113, 114, 115, 116, 117, 129, 130, 131
OFFSET
1,3
MATHEMATICA
Reap[For[n = 0, n < 200, n++, If[MatchQ[PowersRepresentations[n, 7, 4], {Table[_, 7], ___}], Print[n]; Sow[n]]]][[2, 1]] (* Jean-François Alcover, Oct 30 2017 *)
CROSSREFS
Sequence in context: A368533 A309126 A371289 * A039030 A162231 A370957
KEYWORD
nonn
STATUS
approved