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Search: id:A154618
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| A154618 |
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Triangle read by rows: integer values of T(n,m) = (4*m*n+2*m+2*n-3)/3. |
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+0
2
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| 7, 15, 17, 39, 29, 55, 27, 61, 95, 43, 81, 119, 37, 83, 129, 175, 57, 107, 157, 207, 47, 105, 163, 221, 279, 71, 133, 195, 257, 319, 57, 127, 197, 267, 337, 407, 85, 159, 233, 307, 381, 455, 67, 149, 231, 313, 395, 477, 559, 99, 185, 271, 357, 443, 529, 615, 77
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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The sequence contains the integers selected from the full table:
5/3;
11/3,7;
17/3,31/3,15;
23/3,41/3,59/3,77/3;
29/3,17,73/3,95/3,39;
35/3,61/3,29,113/3,139/3,55;
41/3,71/3,101/3,131/3,161/3,191/3,221/3;
47/3,27,115/3,149/3,61,217/3,251/3,95;
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CROSSREFS
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Cf. A034936, A154616
Sequence in context: A069841 A076401 A065566 this_sequence A138641 A115783 A140109
Adjacent sequences: A154615 A154616 A154617 this_sequence A154619 A154620 A154621
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KEYWORD
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nonn,tabf
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AUTHOR
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Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 16 2009
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EXTENSIONS
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Replaced a(26)=67 with 71. More terms from Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 03 2009
Keyword:tabl removed, appearance of fractions clarified by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 16 2009
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