login
A131922
Triangle read by rows: 2*A002024 - A130296 as infinite lower triangular matrices.
0
1, 2, 3, 3, 5, 5, 4, 7, 7, 7, 5, 9, 9, 9, 9, 6, 11, 11, 11, 11, 11, 7, 13, 13, 13, 13, 13, 13, 8, 15, 15, 15, 15, 15, 15, 15, 9, 17, 17, 17, 17, 17, 17, 17, 17, 10, 19, 19, 19, 19, 19, 19, 19, 19, 19, 11, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 12, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23
OFFSET
0,2
COMMENTS
Row sums = A001844: (1, 5, 13, 25, 41, 61, 85, ...).
EXAMPLE
First few rows of the triangle:
1;
2, 3;
3, 5, 5;
4, 7, 7, 7;
5, 9, 9, 9, 9;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jul 29 2007
EXTENSIONS
Edited and more terms from Georg Fischer, Jun 08 2023
STATUS
approved