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A329768
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Number of finite sequences of positive integers whose sum minus runs-resistance is n.
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1
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OFFSET
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1,1
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COMMENTS
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A composition of n is a finite sequence of positive integers with sum n.
For the operation of taking the sequence of run-lengths of a finite sequence, runs-resistance is defined as the number of applications required to reach a singleton.
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LINKS
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EXAMPLE
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The a(1) = 8 and a(2) = 17 compositions whose sum minus runs-resistance is n:
(1) (2)
(1,1) (1,3)
(1,2) (3,1)
(2,1) (1,1,1)
(1,1,2) (1,1,3)
(2,1,1) (1,2,1)
(1,1,2,1) (1,2,2)
(1,2,1,1) (2,2,1)
(3,1,1)
(1,1,1,2)
(1,1,3,1)
(1,3,1,1)
(2,1,1,1)
(1,1,1,2,1)
(1,2,1,1,1)
(1,2,1,1,2)
(2,1,1,2,1)
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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