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A096769
a(n)=Max{ (i+j)!/i!^2 | 0<=i,j<=n }.
1
1, 2, 6, 30, 180, 1260, 10080, 100800, 1108800, 13305600, 172972800, 2421619200, 36324288000, 617512896000, 11115232128000, 211189410432000, 4223788208640000, 88699552381440000, 1951390152391680000
OFFSET
1,2
COMMENTS
Max{ (i+j)!/i!/j! | 0<=i,j<=n }=binomial(2n,n)
LINKS
FORMULA
Partial products of A000037. - Vladeta Jovovic, Aug 17 2004
MATHEMATICA
FoldList[Times, 1, Select[Range[30], !IntegerQ[Sqrt[#]]&]] (* Harvey P. Dale, Oct 09 2013 *)
CROSSREFS
Sequence in context: A180896 A180897 A353184 * A365975 A111059 A009645
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, May 30 2002
STATUS
approved