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Search: id:A062031
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| A062031 |
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Group odd numbers into (1), (3,5,7), (9,11,13,15,17),...; a(n) = product of n-th group. |
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+0
2
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| 1, 105, 328185, 5568833025, 304513870485825, 40992233865440682825, 11492457771692770753505625, 5984524775454356180393209490625, 5325142910343897163530366857379506625, 7598549164899334249502031499667984969915625
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,100
Matthew M. Conroy, Home page (listed instead of email address)
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EXAMPLE
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a(2) =3*5*7 = 105.
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PROGRAM
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(PARI) { for (n=1, 100, b=2*n^2 - 4*n + 3; write("b062031.txt", n, " ", prod(k=0, 2*n - 2, b + 2*k)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 30 2009]
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CROSSREFS
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Sequence in context: A145627 A096150 A068256 this_sequence A036201 A050810 A104315
Adjacent sequences: A062028 A062029 A062030 this_sequence A062032 A062033 A062034
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 02 2001
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EXTENSIONS
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More terms from Matthew M. Conroy, Jun 11 2001
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