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A131335 A000012 * A131334. 5
1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 3, 2, 4, 2, 1, 3, 3, 6, 4, 3, 1, 4, 3, 9, 6, 7, 3, 1, 4, 4, 12, 9, 13, 7, 4, 1, 5, 4, 16, 12, 22, 13, 11, 4, 1, 5, 5, 20, 16, 34, 22, 24, 11, 5, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
Row sums = A000071, Fibonacci numbers - 1, starting (1, 2, 4, 7, 12, 20, 33,...).
LINKS
FORMULA
A000012 * A131334 as infinite lower triangular matrices, where A000012 = (1; 1,1; 1,1,1;...).
EXAMPLE
First few rows of the triangle are:
1;
1, 1;
2, 1, 1;
2, 2, 2, 1;
3, 2, 4, 2, 1;
3, 3, 6, 4, 3, 1;
4, 3, 9, 6, 7, 3, 1;
...
CROSSREFS
Sequence in context: A240473 A286569 A342749 * A225332 A209032 A183935
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jun 29 2007
STATUS
approved

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Last modified April 21 07:21 EDT 2024. Contains 371850 sequences. (Running on oeis4.)