Double factorial of odd numbers: (2*n-1)!! = 1*3*5*...*(2*n-1).
1, 1, 3, 15, 105, 945, 10395, 135135, 2027025, 34459425, 654729075, 13749310575
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18 seqfan posts
Tue Aug 9 01:53:00 CEST 2011 [seqfan] Re: Constant Arising from a Certain Functional Eq
Tue Jan 11 19:20:19 CET 2011 [seqfan] Re: A001147 Double factorial numbers
Tue Jan 11 14:38:53 CET 2011 [seqfan] A001147 Double factorial numbers
Wed Dec 29 15:36:54 CET 2010 [seqfan] A000698 == indecomposable fixed-point free involutions of {2n}?
Sat Oct 24 23:21:26 CEST 2009 [seqfan] Re: more on double factorials/Penson
Wed Oct 21 18:54:36 CEST 2009 [seqfan] Re: more on double factorials/Penson
Tue Oct 20 21:06:35 CEST 2009 [seqfan] more on double factorials/Penson
Tue Oct 20 17:20:36 CEST 2009 [seqfan] Re: definition of double factorial
Tue Oct 20 13:41:09 CEST 2009 [seqfan] Re: definition of double factorial
Tue Oct 20 12:35:40 CEST 2009 [seqfan] definition of double factorial
Wed Aug 12 22:16:09 CEST 2009 [seqfan] Re: Rant on Maple code
Tue Aug 11 13:12:57 CEST 2009 [seqfan] Re: Rant on Maple code
Mon Aug 10 22:30:49 CEST 2009 [seqfan] Re: Rant on Maple code
Mon Aug 10 14:19:25 CEST 2009 [seqfan] Re: Rant on Maple code
Mon Aug 10 11:43:03 CEST 2009 [seqfan] Rant on Maple code
Wed Mar 25 01:10:00 CET 2009 [seqfan] Re: A120778/A001790
Sun Feb 1 21:16:10 CET 2009 [seqfan] Re: Double Factorials
Sun Feb 1 21:16:10 CET 2009 [seqfan] Re: Double Factorials
Index of A-numbers in seqfan: by ascending order
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