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Search: id:A062032
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| A062032 |
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Group odd numbers into (1), (3,5), (7,9,11),(13,15,17,19),...; a(n) = product of n-th group. |
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+0
2
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| 1, 15, 693, 62985, 9454725, 2118331215, 662496582825, 275735605996305, 147364622598587625, 98358760729571316975, 80185770642041047108125, 78405694972326706112753625, 90569612902695107431619494125
(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
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EXAMPLE
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a(3) =7*9*11 = 693.
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PROGRAM
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(PARI) { for (n=1, 100, b=n^2 - n + 1; write("b062032.txt", n, " ", prod(k=0, n - 1, 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: A166186 A001520 A062079 this_sequence A117812 A034941 A055683
Adjacent sequences: A062029 A062030 A062031 this_sequence A062033 A062034 A062035
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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 Jason Earls (zevi_35711(AT)yahoo.com), Jun 08 2001
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