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A073617
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Consider Pascal's triangle A007318; a(n) = product of terms at +45 degrees slope with the horizontal.
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3
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1, 1, 1, 2, 3, 12, 30, 240, 1050, 16800, 132300, 4233600, 61122600, 3911846400, 104886381600, 13425456844800, 674943865596000, 172785629592576000, 16407885372638760000, 8400837310791045120000, 1515727634953623371280000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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COMMENTS
| The sum of the terms pertaining to the above product is the n-th Fibonacci number: 1 + 5 + 6 + 1 = 13.
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EXAMPLE
| The seventh diagonal is 1,5,6,1 and product of the terms = 30 hecne a(6) = 30.
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CROSSREFS
| Cf. A073618.
Cf. A007685.
Sequence in context: A109489 A169636 A105401 * A034381 A076424 A165301
Adjacent sequences: A073614 A073615 A073616 * A073618 A073619 A073620
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KEYWORD
| nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 07 2002
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EXTENSIONS
| More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 22 2003
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