A379340 Integers m such that m^2 is the sum of two or more squares of consecutive integers in more than one way.

70, 105, 143, 195, 2849, 3854, 5681, 8075, 143737, 144157, 208395, 939356, 1226670, 2259257, 2656724, 2741046, 4598528, 6555549, 7832413, 11818136, 19751043, 32938290, 429323037, 807759678, 1375704770, 1656510196, 1981351834

Offset

1,1

Links

Table of n, a(n) for n=1..27.

Xianwen Wang, Rust program

Example

105^2 = (-19)^2 + (-18)^2 + ... + 29^2 = (-21)^2 + (-20)^2 + ... + 28^2.
143^2 = 38^2 + 39^2 + ... + 48^2 = 7^2 + 8^2 + ... + 39^2.
2259257^2 = 26181^2 + 26182^2 + ... + 32158^2 = 9401^2 + 9402^2 + ... + 25273^2.

Crossrefs

Cf. A062681.

Subsequence of A174069.

Sequence in context: A353061 A382022 A051971 * A180274 A075004 A043222

Adjacent sequences: A379337 A379338 A379339 * A379341 A379342 A379343

Keyword

nonn

Author

Xianwen Wang, May 23 2025

Status

approved