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A113676
Number of elements of rows of Golomb's sequence
A001462
, with one less 2, interpreted as triangle: Start with first row 1. The row sum of row n-1 gives the number of elements taken from
A001642
(one less 2) of row n.
7
1, 1, 2, 6, 27, 234, 6202, 1084009, 4362192095
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OFFSET
1,3
COMMENTS
a(n+1) gives row sum of row n of this triangle.
Conjecture: a(n) for n>1 gives first differences of Lionel Levile's sequence
A014644
(n) for n>=3.
Conjecture: Final elements of the rows form
A014644
except for duplicate 2.
LINKS
Table of n, a(n) for n=1..9.
EXAMPLE
The triangle begins 1; 2; 3,3; 4,4,4,5,5,5; ...
Row 4: [4,4,4,5,5,5] is generated from row 3: [3,3] because there are (3) 4's and (3) 5's in row 4.
CROSSREFS
Sequence in context:
A011834
A003513
A113731
*
A183323
A153253
A174880
Adjacent sequences:
A113673
A113674
A113675
*
A113677
A113678
A113679
KEYWORD
nonn
AUTHOR
Floor van Lamoen
and
Paul D. Hanna
, Nov 06 2005
STATUS
approved
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Last modified September 1 00:14 EDT 2024. Contains 375575 sequences. (Running on oeis4.)