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Search: id:A052201
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| A052201 |
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Equivalent of the Kurepa hypothesis for left factorial. |
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+0
1
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| 4, 15, 48, 175, 816, 4851, 34960, 292743, 2774040, 29251651, 339184776, 4285584615, 58571107168, 860622082035, 13525670637216, 226358825764711, 4018390654376520, 75413358213752643, 1491684815796629080
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(1)=4, a(2)= 15, a(3)= 48, a(n)=(n+1)*( a(n-1)-a(n-3)) - 3*a(n-2)
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CROSSREFS
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Sequence in context: A111038 A100506 A093967 this_sequence A099167 A056337 A053406
Adjacent sequences: A052198 A052199 A052200 this_sequence A052202 A052203 A052204
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KEYWORD
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nonn,easy
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AUTHOR
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Aleksandar Petojevic (apetoje(AT)ptt.yu), Jan 28 2000
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), Jan 31 2000
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