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Search: id:A135065
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| 1, 4, 4, 9, 18, 9, 16, 48, 48, 16, 25, 100, 150, 100, 25, 36, 180, 360, 360, 180, 36, 49, 294, 735, 980, 735, 294, 49
(list; table; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row sums = A014477: (1, 8, 36, 128, 400, 1152, 3136,...). A135065 * [1/1, 1/2, 1/3,...] = A066524: (1, 6, 21, 60, 155,...).
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EXAMPLE
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First few rows of the triangle are:
1;
4, 4;
9, 18, 9;
16, 48, 48, 16;
25, 100, 150, 100, 25;
36, 180, 360, 360, 180, 36;
49, 294, 735, 980, 735, 294, 49;
...
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MAPLE
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with(combstruct):for n from 0 to 11 do seq(n*m*count(Combination(n), size=m), m = 1 .. n) od; - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 09 2008
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CROSSREFS
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Cf. A127733, A066524, A014477.
Sequence in context: A133037 A061886 A059815 this_sequence A067553 A112683 A117879
Adjacent sequences: A135062 A135063 A135064 this_sequence A135066 A135067 A135068
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Nov 16 2007
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EXTENSIONS
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Corrected by Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 09 2008
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