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Search: id:A138121
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| A138121 |
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A shell model of partitions. Triangle read by rows: row n lists the parts of the outer shell of the partitions of n. |
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+0
23
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| 1, 2, 1, 3, 1, 1, 4, 2, 2, 1, 1, 1, 5, 3, 2, 1, 1, 1, 1, 1, 6, 3, 3, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 7, 4, 3, 5, 2, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 8, 4, 4, 5, 3, 6, 2, 3, 3, 2, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 9, 5, 4, 6, 3, 3, 3, 3, 7, 2, 4, 3, 2, 5, 2, 2, 3, 2, 2
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Row n lists the terms of row n of A135010, in decreasing order. See the integrated diagram of partitions and more information in the entry A135010.
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LINKS
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O. E. Pol, A shell model of partitions (2D and 3D) [From Omar E. Pol (info(AT)polprimos.com), Sep 07 2008]
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EXAMPLE
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Triangle begins:
1
2,1
3,1,1
4,2,2,1,1,1
5,3,2,1,1,1,1,1,
6,3,3,4,2,2,2,2,1,1,1,1,1,1,1
7,4,3,5,2,3,2,2,1,1,1,1,1,1,1,1,1,1,1
8,4,4,5,3,6,2,3,3,2,4,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
9,5,4,6,3,3,3,3,7,2,4,3,2,5,2,2,3,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
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CROSSREFS
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Cf. A135010, A138122, A138123, A138136, A138137, A138138, A138151, A138152, A138153.
Cf. A138135, A138879, A138880, 141285, 141411. [From Omar E. Pol (info(AT)polprimos.com), Sep 07 2008]
Sequence in context: A135841 A089178 A116599 this_sequence A138151 A166556 A143318
Adjacent sequences: A138118 A138119 A138120 this_sequence A138122 A138123 A138124
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KEYWORD
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nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Mar 21 2008
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