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Search: id:A162618
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| A162618 |
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Triangle read by rows in which row n lists n consecutive natural numbers A000027, starting with A08578(n-1)-n+1. |
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+0
4
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| 1, 1, 2, 1, 2, 3, 2, 3, 4, 5, 3, 4, 5, 6, 7, 6, 7, 8, 9, 10, 11, 7, 8, 9, 10, 11, 12, 13, 10, 11, 12, 13, 14, 15, 16, 17, 11, 12, 13, 14, 15, 16, 17, 18, 19, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30
(list; table; graph; listen)
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OFFSET
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1,3
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COMMENT
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Note that the last term of the n-th row is the non-composite number A008578(n-1).
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EXAMPLE
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Contribution from Omar E. Pol (info(AT)polprimos.com), Jul 15 2009: (Start)
Triangle begins:
1;
1, 2;
1, 2, 3;
2, 3, 4, 5;
3, 4, 5, 6, 7;
6, 7, 8, 9,10,11;
7, 8, 9,10,11,12,13;
10,11,12,13,14,15,16,17;
11,12,13,14,15,16,17,18,19;
14,15,16,17,18,19,20,21,22,23;
19,20,21,22,23,24,25,26,27,28,29;
20,21,22,23,24,25,26,27,28,29,30,31;
(End)
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CROSSREFS
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Cf. A000040, A008578, A159797, A159798, A162611, A162619, A162620.
Cf. A162614, A162622. [From Omar E. Pol (info(AT)polprimos.com), Jul 15 2009]
Sequence in context: A025798 A161064 A070086 this_sequence A036576 A171729 A127255
Adjacent sequences: A162615 A162616 A162617 this_sequence A162619 A162620 A162621
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KEYWORD
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easy,nonn,tabl
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Jul 10 2009
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