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Search: id:A084947
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| A084947 |
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Product(7*i+2,i=0..n-1). |
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+0
9
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| 1, 2, 18, 288, 6624, 198720, 7352640, 323516160, 16499324160, 956960801280, 62202452083200, 4478576549990400, 353807547449241600, 30427449080634777600, 2829752764499034316800
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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A084947(n) = A084942(n)/A000142(n)*A000079(n) = 7^n*pochhammer(2/7, n) = 7^n*GAMMA(n+2/7)/GAMMA(2/7)
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MAPLE
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a := n->product(7*i+2, i=0..n-1); [seq(a(j), j=0..30)];
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CROSSREFS
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Cf. A000165, A008544, A001813, A047055, A047657, A084948, A084949.
Sequence in context: A138275 A127134 A131455 this_sequence A123385 A121564 A092563
Adjacent sequences: A084944 A084945 A084946 this_sequence A084948 A084949 A084950
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KEYWORD
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easy,nonn
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AUTHOR
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Daniel Dockery (peritus(AT)gmail.com) Jun 13 2003
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