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A033187 n!!/n!. 0
1, 1, 1, 120, 25852016738884976640000 (list; graph; refs; listen; history; internal format)
OFFSET

0,4

COMMENTS

The next two terms have 197 and 1744 decimal digits, respectively.

LINKS

Index entries for sequences related to factorial numbers

CROSSREFS

Sequence in context: A172626 A172730 A045509 * A106547 A106544 A079842

Adjacent sequences:  A033184 A033185 A033186 * A033188 A033189 A033190

KEYWORD

nonn,easy

AUTHOR

Ken Alverson (KenA(AT)tso.cin.ix.ne)

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Last modified February 14 15:32 EST 2012. Contains 205635 sequences.