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S.o.S is S (Posted on 2017-04-03)

Sum of how many squares of successive positive integers is a square number?

Surprisingly enough, trivial answer discounted, only one number qualifies!

No Solution Yet Submitted by Ady TZIDON

Rating: 2.0000 (1 votes)

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Many numbers qualify (spoiler)

| Comment 4 of 6 |

See Sloan A001032, which lists the following answers to this problem:

1, 2, 11, 23, 24, 26, 33, 47, 49, 50, 59, 73, 74, 88, 96, 97, 107, 121, 122, 146, 169, 177, 184, 191, 193, 194, 218, 239, 241, 242, 249, 289, 297, 299, 311, 312, 313, 337, 338, 347, 352, 361, 362, 376, 383, 393, 407, 409, 431, 443, 457, 458, 479, 481, 491, 506 This list is presumably not complete

Edited on April 3, 2017, 7:35 pm

Posted by Steve Herman on 2017-04-03 19:34:40

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