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Search: id:A153283
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| A153283 |
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A triangular sequence designed with row sums 2*3^n. |
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+0
1
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| 2, 3, 3, 2, 14, 2, 2, 25, 25, 2, 2, 36, 86, 36, 2, 2, 47, 194, 194, 47, 2, 2, 56, 304, 734, 304, 56, 2, 2, 69, 410, 3412, 410, 69, 2, 2, 80, 518, 5961, 5961, 518, 80, 2
(list; table; graph; listen)
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OFFSET
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0,1
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COMMENT
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Row sums are:
{2, 6, 18, 54, 162, 486., 1458, 4374., 13122,...}.
Sequence was calculated to the 3^n level by hand.
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EXAMPLE
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{2},
{3, 3},
{2, 14, 2},
{2, 25, 25, 2},
{2, 36, 86, 36, 2},
{2, 47, 194, 194, 47, 2},
{2, 56, 304, 734, 304, 56, 2},
{2, 69, 410, 3412, 410, 69, 2},
{2, 80, 518, 5961, 5961, 518, 80, 2}
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MATHEMATICA
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a = {{1},
{3/2, 3/2},
{1, 7, 1},
{1, 25/2, 25/2, 1},
{1, 18, 43, 18, 1},
{1, 23.5, 97, 97, 23.5, 1},
{1, 28, 152, 367, 152, 28, 1},
{1, 34.5, 205, 1706, 205, 34.5, 1},
{1, 40, 259, 2980.5, 2980.5, 259, 40, 1}}
b = Rationalize[2*a];
Flatten[b]
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CROSSREFS
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Sequence in context: A153491 A153311 A153312 this_sequence A153288 A153479 A153489
Adjacent sequences: A153280 A153281 A153282 this_sequence A153284 A153285 A153286
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KEYWORD
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nonn,tabl
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AUTHOR
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Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Dec 23 2008
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