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A136436
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Concatenation of subsequences: for each i the sequence of integers such that (1) they can be grouped into terms having the sums 1,2,3,...,i; (2) they can be grouped inte terms having the sums i,...,3,2,1; (3) they are as large as possible.
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1
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1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 2, 1, 3, 1, 2, 2, 1, 1, 2, 3, 4, 1, 4, 3, 2, 1, 1, 2, 3, 1, 3, 3, 2, 3, 3, 1, 3, 2, 1, 1, 2, 3, 2, 2, 5, 6, 5, 2, 2, 3, 2, 1, 1, 2, 3, 3, 1, 5, 2, 4, 3, 4, 2, 5, 1, 3, 3, 2, 1, 1, 2, 3, 4, 5, 4, 2, 6, 1, 6, 2, 4, 5, 4, 3, 2, 1, 1, 2, 3, 4, 1, 4, 6, 7, 2, 6, 2, 7
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,6
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LINKS
| Jonas Wallgren (jonwa(AT)ida.liu.se), Apr 02 2008, Table of n, a(n) for n = 1..212
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EXAMPLE
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....|1|2|.3.|..4..|
i=4: 1 2 1 2 1 2 1 is a subsequence
....|..4..|.3.|2|1|
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....|1|2|3|4|.5.|..6..|
i=6: 1 2 3 4 1 4 3 2 1 is a subsequence
....|..6..|.5.|4|3|2|1|
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CROSSREFS
| Sequence in context: A163495 A060709 A035222 * A143331 A167677 A074293
Adjacent sequences: A136433 A136434 A136435 * A136437 A136438 A136439
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KEYWORD
| easy,nonn,tabl
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AUTHOR
| Jonas Wallgren (jonwa(AT)ida.liu.se), Apr 02 2008
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