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A004432 Numbers that are the sum of 3 distinct nonzero squares. 10
14, 21, 26, 29, 30, 35, 38, 41, 42, 45, 46, 49, 50, 53, 54, 56, 59, 61, 62, 65, 66, 69, 70, 74, 75, 77, 78, 81, 83, 84, 86, 89, 90, 91, 93, 94, 98, 101, 104, 105, 106, 107, 109, 110, 113, 114, 115, 116, 117, 118, 120, 121, 122, 125, 126, 129, 131, 133 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

n=x^2+y^2+z^2 with 0<x<y<z.

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

Index entries for sequences related to sums of squares

EXAMPLE

14=1^2+2^2+3^2; 62=1^2+5^2+6^2.

MATHEMATICA

f[upto_]:=Module[{max=Floor[Sqrt[upto]]}, Select[Union[Total/@ (Subsets[Range[max], {3}]^2)], #<=upto&]]; f[150]  (* From Harvey P. Dale, Mar 24 2011 *)

CROSSREFS

Cf. A024803, A025339, A001974.

Sequence in context: A114985 A001944 A024803 * A025339 A096017 A006614

Adjacent sequences:  A004429 A004430 A004431 * A004433 A004434 A004435

KEYWORD

nonn,easy,nice

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 16:13 EST 2012. Contains 206050 sequences.