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A371306
Least positive number k such that binomial(k^2,k) is divisible by n.
2
1, 2, 2, 3, 4, 2, 3, 6, 8, 4, 5, 3, 4, 3, 5, 6, 6, 8, 8, 4, 3, 5, 5, 6, 9, 4, 16, 3, 8, 5, 6, 14, 5, 6, 4, 8, 9, 8, 9, 10, 13, 3, 7, 6, 9, 5, 7, 6, 10, 9, 6, 4, 13, 16, 5, 6, 8, 8, 8, 14, 8, 6, 12, 23, 4, 5, 12, 6, 5, 4, 12, 8, 9, 9, 9, 8, 5, 9, 9, 14, 16, 13, 13, 3, 14, 7, 8, 6, 19, 9, 4, 7, 6, 7, 9, 14, 10, 10, 9, 16
OFFSET
1,2
LINKS
PROG
(PARI) a(n) = my(k=1); while(binomial(k^2, k)%n>0, k++); k;
CROSSREFS
Cf. A014062.
Sequence in context: A230546 A286617 A328446 * A257062 A098223 A114892
KEYWORD
nonn,easy
AUTHOR
Seiichi Manyama, Mar 23 2024
STATUS
approved