LINKS
Andrew Howroyd, <a href="/A343239/b343239_1.txt">Table of n, a(n) for n = 1..1468</a> (first 500 rows)
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Revision History for A343239
(Bold, blue-underlined text is an addition; faded, red-underlined text is aShowing entries 1-10 | older changes
Irregular triangle read by rows giving the solutions x for x^2 == -5 (mod A343238(n)), for x from {0, 1, 2, ..., A343238(n)-1}, for n >= 1.
(history; published version)
(history; published version)
STATUS
proposed
approved
STATUS
editing
proposed
LINKS
Andrew Howroyd, <a href="/A343239/b343239_1.txt">Table of n, a(n) for n = 1..1468</a> (first 500 rows)
KEYWORD
nonn,tabf,easy
STATUS
approved
editing
STATUS
reviewed
approved
STATUS
proposed
reviewed
STATUS
editing
proposed
PROG
(PARI) isok(k) = issquare(Mod(-5, k)); \\ A343238
lista(nn) = my(list = List()); for (n=1, nn, if (issquare(Mod(-5, n)), my(row = select(x->(Mod(x, n)^2 + 5 == 0), [0..n-1])); listput(list, row))); Vec(list); \\ Michel Marcus, Sep 17 2023
STATUS
approved
editing
STATUS
editing
approved