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Search: id:A154631
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| A154631 |
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Triangle read by rows where T(m.n)=2mn+m+n+5 |
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+0
2
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| 9, 12, 17, 15, 22, 29, 18, 27, 36, 45, 21, 32, 43, 54, 65, 24, 37, 50, 63, 76, 89, 27, 42, 57, 72, 87, 102, 117, 30, 47, 64, 81, 98, 115, 132, 149, 33, 52, 71, 90, 109, 128, 147, 166, 185, 36, 57, 78, 99, 120, 141, 162, 183, 204, 225
(list; table; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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Tiangle begins: 9; 12, 17; 15, 22, 29; 18, 27, 36, 45; 21, 32, 43 54, 65; 24, 37, 50, 63, 76, 89; 27, 42, 57, 72, 87, 102, 117; 30, 47, 64, 81, 98, 115, 132, 149; 33, 52, 71, 90, 109, 128, 147, 166, 185; 36, 57, 78, 99, 120, 141, 162, 183, 204, 225;
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CROSSREFS
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Cf. A009706, A153044
Sequence in context: A084375 A076674 A027571 this_sequence A141552 A162822 A087269
Adjacent sequences: A154628 A154629 A154630 this_sequence A154632 A154633 A154634
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KEYWORD
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nonn,tabl
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AUTHOR
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Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 17 2009
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