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Search: id:A042960
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| A042960 |
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The sequence d when b is obtained by reversing the parity of Euler's partition function A000041. |
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+0
1
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| 2, 4, 9, 15, 16, 18, 21, 22, 27, 28, 30, 31, 34, 35, 36, 41, 44
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Map a binary sequence b=[ b_1,... ] to a binary sequence c=[ c_1,... ] so that C=1/Product((1-x^i)^c_i == 1+Sum b_i*x^i mod 2.
This produces 2 new sequences: d={i:c_i=1} and e=[ 1,e_1,... ] where C=1+Sum e_i*x^i.
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CROSSREFS
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Adjacent sequences: A042957 A042958 A042959 this_sequence A042961 A042962 A042963
Sequence in context: A119637 A113862 A036277 this_sequence A045975 A058296 A022948
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KEYWORD
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nonn
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AUTHOR
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njas and J. H. Conway (conway(AT)math.princeton.edu)
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