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Search: id:A113894
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| A113894 |
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A062190 formatted as a triangular array: triangle centered column: 1 14 216 3300 etc. |
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+0
1
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| 1, 14, 216, 3300, 50050, 756756, 11435424, 172931616, 2618916300, 39731777800, 603923022560, 9197348345640, 140334704005860
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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C(0+2*n,0+n)*C(5+2*n,0+n)
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FORMULA
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C(0+2*n, 0+n)*C(5+2*n, 0+n)
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EXAMPLE
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if n=0 then C(0+2*0,0+0)*C(5+2*0,0+0)=C(0,0)*C(5,0)=1*1=1
if n=4 then C(0+2*4,0+4)*C(5+2*4,0+4)=C(8,4)*C(13,4)=70*715=50050
if n=10 then C(0+2*10,0+10)*C(5+2*10,0+10)=C(20,10)*C(25,10)=184756*3268760=603923022560
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CROSSREFS
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Cf. A062190.
Adjacent sequences: A113891 A113892 A113893 this_sequence A113895 A113896 A113897
Sequence in context: A097183 A004369 A121972 this_sequence A027774 A099272 A138560
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KEYWORD
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easy,nonn,uned
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AUTHOR
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Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 28 2006
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