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A207982
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Least m>1 such that all central binomial coefficients C(2k,k), k<=n, are pairwise not congruent mod m.
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11
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2, 3, 5, 11, 11, 11, 23, 23, 23, 31, 43, 43, 43, 43, 59, 59, 59, 59, 107, 149, 151, 151, 151, 151, 163, 163, 163, 163, 163, 163, 163, 163, 163, 277, 277, 277, 277, 401, 401, 457, 457, 457, 457, 457, 457, 457, 479, 479, 479, 479, 479, 479, 479, 479, 479, 479
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OFFSET
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1,1
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LINKS
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PROG
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(PARI) m=2; for(n=1, 99, forstep(nn=n, 2, -1, for(k=1, nn-1, (binomial(nn*2, nn)-binomial(2*k, k))%m&next; m++; nn=n+1; next(2))); print1(m", "))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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