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Search: id:A138528
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| A138528 |
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a(1) = 1. The nth run (after the initial 1) of A138529(n) terms is (1,2,3,...,A138529(n)), where A138529(n) = sum{k=1 to n} a(k). |
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+0
2
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| 1, 1, 1, 2, 1, 2, 3, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
(list; graph; listen)
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OFFSET
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1,4
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LINKS
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Leroy Quet, Home Page (listed in lieu of email address)
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EXAMPLE
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Runs (after the initial 1) each placed in parentheses:
(Notice that nth run in parentheses contains exactly (sum{k=1 to n} a(k)) terms.)
1, (1), (1, 2), (1, 2, 3), (1, 2, 3, 4, 5), (1, 2, 3, 4, 5, 6), (1, 2, 3, 4, 5, 6, 7, 8), (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11), (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12), (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14), (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17), ...
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CROSSREFS
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Cf. A138529.
Sequence in context: A120418 A120853 A175022 this_sequence A037125 A162192 A066657
Adjacent sequences: A138525 A138526 A138527 this_sequence A138529 A138530 A138531
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KEYWORD
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easy,nonn
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AUTHOR
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Leroy Quet Mar 23 2008
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