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A081370 Binomial(n^2, n) reduced mod n^2 is 0. 3
1, 30, 105, 120, 132, 231, 252, 380, 495, 520, 595, 616, 630, 680, 756, 858, 870, 924, 1040, 1155, 1173, 1365, 1428, 1463, 1547, 1610, 1722, 1768, 1820, 1953, 1976, 1995, 2002, 2016, 2080, 2093, 2170, 2184, 2277, 2310, 2508, 2520, 2530, 2552, 2618, 2622 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..46.

MATHEMATICA

Do[s=Mod[Binomial[n^2, n], n^2]; If[s==0, Print[n]], {n, 1, 10000}]

CROSSREFS

Cf. A014062, A081369.

Sequence in context: A043998 A101056 A316362 * A257891 A158445 A046301

Adjacent sequences:  A081367 A081368 A081369 * A081371 A081372 A081373

KEYWORD

nonn

AUTHOR

Labos Elemer, Mar 20 2003

STATUS

approved

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Last modified October 17 08:36 EDT 2019. Contains 328107 sequences. (Running on oeis4.)