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A025344 Numbers that are the sum of 3 distinct nonzero squares in exactly 6 ways. 1
314, 329, 374, 426, 434, 458, 497, 530, 542, 546, 558, 594, 602, 605, 641, 650, 665, 693, 698, 705, 713, 714, 725, 741, 746, 750, 755, 766, 773, 774, 782, 818, 825, 833, 842, 845, 849, 861, 875, 882, 885, 902, 930, 934, 962, 966, 998, 1010, 1013, 1019, 1026, 1058 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..4446

Index entries for sequences related to sums of squares

MAPLE

N:= 10^6; # to get all terms <= N

S:= Vector(N):

for a from 1 to floor(sqrt(N/3)) do

  for b from a+1 to floor(sqrt((N-a^2)/2)) do

    c:= [$(b+1) .. floor(sqrt(N-a^2-b^2))]:

    v:= map(t -> a^2 + b^2 + t^2, c):

    S[v]:= map(`+`, S[v], 1)

od od: select(t -> S[t]=6, [$1..N]); # Robert Israel, Jan 03 2016

CROSSREFS

Sequence in context: A107115 A045290 A025352 * A219962 A186396 A107117

Adjacent sequences:  A025341 A025342 A025343 * A025345 A025346 A025347

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 15 09:22 EDT 2019. Contains 328026 sequences. (Running on oeis4.)