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URL: https://oeis.org/A389147

⇱ A389147 - OEIS

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A389147
Minimum largest of a set of n nonnegative integers such that the difference of any pair is a square.
0
0, 1, 25, 485809
OFFSET
1,3
COMMENTS
If we include the additional constraint to consider only positive integers, add 1 to each term; thus, 1, 2, 26, 485810, ...
a(5) > 9*10^10.
EXAMPLE
a(1) = 0: {0},
a(2) = 1: {0, 1},
a(3) = 25: {0, 9, 25},
a(4) = 485809: {0, 23409, 34225, 485809} (or even {0, 451584, 462400, 485809}).
CROSSREFS
Sequence in context: A347812 A251362 A196520 * A228536 A191559 A279039
KEYWORD
nonn,hard,more
AUTHOR
Marco Ripà, Sep 24 2025
STATUS
approved