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A007919
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Smallest k such that k*n is a double factorial.
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0
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1, 1, 1, 2, 3, 8, 15, 1, 105, 192, 945, 4, 10395, 46080, 1, 3, 2027025, 2560, 34459425, 192, 5, 3715891200, 13749310575, 2, 81081, 1961990553600, 35, 23040, 213458046676875, 128, 6190283353629375, 12
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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REFERENCES
| F. Smarandache, "Only Problems, not Solutions!", Xiquan Publ., Phoenix-Chicago, 1993.
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LINKS
| M. L. Perez et al., eds., Smarandache Notions Journal
F. Smarandache, Only Problems, Not Solutions!.
Index entries for sequences related to factorial numbers
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CROSSREFS
| Sequence in context: A005316 A076876 A124495 * A205101 A069752 A004731
Adjacent sequences: A007916 A007917 A007918 * A007920 A007921 A007922
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KEYWORD
| nonn
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AUTHOR
| R. Muller
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