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 A318955 Binomial(A319500(n),a(n)) = A006917(n) with 2 <= a(n) <= A319500(n)/2. 2
 2, 2, 2, 3, 2, 2, 3, 2, 2, 2, 3, 2, 4, 2, 3, 2, 2, 3, 4, 2, 2, 3, 2, 2, 4, 3, 2, 5, 2, 2, 3, 2, 2, 4, 2, 3, 2, 2, 2, 3, 5, 2, 4, 2, 2, 3, 2, 2, 2, 2, 3, 2, 4, 2, 2, 5, 3, 2, 2, 2, 6, 2, 3, 2, 4, 2, 2, 2, 3, 2, 2, 2, 5, 2, 3, 4, 2, 2, 2, 3, 2, 2, 2, 6, 2, 3, 4, 2, 2, 2, 5, 2, 3, 2, 2, 2, 2, 3, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS First differs from A022912 at n=18. LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE a(3) = 6 because A006987(3) = 15 = binomial(6,2). MAPLE N:= 10000: # for binomial(n, k) values <= N S:= {}: for n from 2 while n*(n-1)/2 <= N do   for k from 2 to n/2 do     v:= binomial(n, k);     if v > N then break fi;     if not member(v, S) then       S:= S union {v};       K[v]:= k;     fi od od: A006987:= sort(convert(S, list)): seq(K[A006987[i]], i=1..nops(A006987)); CROSSREFS Cf. A006987, A022912, A319500. Sequence in context: A279408 A135592 A022912 * A173883 A022922 A239141 Adjacent sequences:  A318952 A318953 A318954 * A318956 A318957 A318958 KEYWORD nonn AUTHOR Robert Israel, Sep 20 2018 STATUS approved

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Last modified April 20 09:59 EDT 2019. Contains 322309 sequences. (Running on oeis4.)