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Search: id:A025549
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| A025549 |
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(2n-1)!!/LCM{1,3,5,...,2n-1}. |
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+0
1
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| 1, 1, 1, 1, 3, 3, 3, 45, 45, 45, 945, 945, 4725, 42525, 42525, 42525, 1403325, 49116375, 49116375, 1915538625, 1915538625, 1915538625, 86199238125, 86199238125, 603394666875, 30773128010625, 30773128010625
(list; graph; listen)
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OFFSET
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1,5
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MATHEMATICA
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L[ {x___} ] := LCM[ x ]; Table[ (2n-1)!!/L[ Range[ 1, 2n-1, 2 ] ], {n, 1, 50} ]
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CROSSREFS
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Sequence in context: A131445 A033874 A122092 this_sequence A135584 A091323 A118539
Adjacent sequences: A025546 A025547 A025548 this_sequence A025550 A025551 A025552
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KEYWORD
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nonn,easy
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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EXTENSIONS
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Description corrected and sequence extended by Erich Friedman (erich.friedman(AT)stetson.edu).
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