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Search: id:A004432
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| A004432 |
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Numbers that are the sum of 3 distinct nonzero squares. |
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+0
10
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| 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; listen)
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OFFSET
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1,1
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COMMENT
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n=x^2+y^2+z^2 with 0<x<y<z.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..10000
Index entries for sequences related to sums of squares
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EXAMPLE
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14=1^2+2^2+3^2; 62=1^2+5^2+6^2.
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MATHEMATICA
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a=1; b=2; c=3; lst={}; Do[Do[Do[s=a^2+b^2+c^2; AppendTo[lst, s], {a, 1, b-1}], {b, a, c-1}], {c, b, 25}]; lst; Take[Union[lst], 123] [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 22 2009]
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CROSSREFS
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Cf. A024803, A025339, A001974.
Sequence in context: A114985 A001944 A024803 this_sequence A025339 A096017 A006614
Adjacent sequences: A004429 A004430 A004431 this_sequence A004433 A004434 A004435
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KEYWORD
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nonn,easy,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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