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A128715 A131830 + A103451 - A000012 as infinite lower triangular matrices. 1
1, 2, 2, 3, 1, 3, 4, 2, 2, 4, 5, 3, 5, 3, 5, 6, 4, 9, 9, 4, 6, 7, 5, 14, 19, 14, 5, 7, 8, 6, 20, 34, 34, 20, 6, 8, 9, 7, 27, 55, 69, 55, 27, 7, 9, 10, 8, 35, 83, 125, 125, 83, 35, 8, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
Row sums are (apart from the first row) given by A005126.
LINKS
EXAMPLE
First few rows of the triangle are:
1;
2, 2;
3, 1, 3;
4, 2, 2, 4;
5, 3, 5, 3, 5;
6, 4, 9, 9, 4, 6;
7, 5, 14, 19, 14, 5, 7;
8, 6, 20, 34, 34, 20, 6, 8;
9, 7, 27, 55, 69, 55, 27, 7, 9;
...
CROSSREFS
Sequence in context: A237448 A204143 A143182 * A237447 A368053 A338573
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Aug 09 2007
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)