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A202820
The left-hand half-triangle of A202704.
1
0, 0, 0, 1, 1, 1, 3, 2, 1, 0, 17, 20, 22, 23, 23, 105, 88, 68, 46, 23, 0
OFFSET
1,7
EXAMPLE
Triangle begins:
0
0 0
1 1 1
3 2 1 0
17 20 22 23 23
105 88 68 46 23 0
CROSSREFS
Sequence in context: A321964 A197819 A232006 * A113081 A172184 A109865
KEYWORD
nonn,tabl,more
AUTHOR
N. J. A. Sloane, Dec 25 2011
STATUS
approved