a(n) = the number of runs (those of 0 and of 1 considered together) in the binary representation of A175020(n).
1, 2, 1, 2, 3, 1, 2, 3, 4, 2, 1, 2, 3, 4, 3, 5, 2, 1, 2, 3, 4, 3, 4, 5, 6, 2, 3, 2, 1, 2, 3, 4, 3, 4
3 seqfan posts
Tue Nov 3 21:24:24 CET 2009 [seqfan] Re: An Arrangement Of Partitions
Tue Nov 3 21:14:20 CET 2009 [seqfan] Re: An Arrangement Of Partitions
Tue Nov 3 20:53:22 CET 2009 [seqfan] An Arrangement Of Partitions
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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