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A147767
Triangle read by rows, square of A116598.
2
1, 0, 1, 2, 0, 1, 2, 2, 0, 1, 5, 2, 2, 0, 1, 6, 5, 2, 2, 0, 1, 6, 5, 2, 2, 0, 1, 13, 6, 5, 2, 2, 0, 1, 16, 13, 6, 5, 2, 2, 0, 1, 30, 16, 13, 6, 5, 2, 2, 0, 1, 40, 30, 16, 13, 6, 5, 2, 2, 0, 1, 40, 30, 16, 13, 6, 5, 2, 2, 0, 1
OFFSET
0,4
COMMENTS
Row sums = A000990: (1, 1, 3, 5, 10, 16, 29, 45, ...).
FORMULA
Triangle read by rows, A116598^2. A147766 in every column.
EXAMPLE
First few rows of the triangle:
1;
0, 1;
2, 0, 1;
2, 2, 0, 1;
5, 2, 2, 0, 1;
6, 5, 2, 2, 0, 1;
13, 6, 5, 2, 2, 0, 1;
16, 13, 6, 5, 2, 2, 0, 1;
...
CROSSREFS
Sequence in context: A096144 A118401 A354786 * A113678 A305436 A328708
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Nov 11 2008
EXTENSIONS
Typo in formula corrected by Olivier Gérard, Jul 25 2016
STATUS
approved