A115040 Minimum largest of a set of n distinct positive integers such that the sum of any pair is a square.

3, 30, 3362, 763442

Offset

2,1

Comments

a(6) > 10^9. - Lars Blomberg, Oct 29 2014

Links

Table of n, a(n) for n=2..5.

Michael Winckler, Puzzle 051 [Cached copy at the Wayback Machine]

Michael Winckler, Solution to Puzzle No. 051 [Cached copy at the Wayback Machine]

Example

a(2) = 3: {1, 3},
a(3) = 30: {6, 19, 30},
a(4) = 3362: {2, 359, 482, 3362},
a(5) = 763442: {7442, 28658, 148583, 177458, 763442}.

Crossrefs

Cf. A195854, A292158.

Sequence in context: A208789 A296173 A248728 * A296409 A296407 A308383

Adjacent sequences: A115037 A115038 A115039 * A115041 A115042 A115043

Keyword

nonn,nice,hard,more

Author

William Rex Marshall, Feb 26 2006

Status

approved