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A163994
Triangle read by rows in which row n contains the first column of the n-th triangle of A164002.
1
1, 1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 2, 2, 2, 1, 1, 2, 3, 3, 2, 1, 1, 2, 3, 3, 3, 2, 1, 1, 2, 3, 3, 3, 3, 2, 1, 1, 2, 3, 4, 4, 4, 3, 2, 1, 1, 2, 3, 4, 4, 4, 4, 3, 2, 1, 1, 2, 3, 4, 4, 4, 4, 4, 3, 2, 1, 1, 2, 3, 4, 5, 5, 5, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 5, 5, 5, 5, 4, 3, 2, 1, 1, 2, 3, 4, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1
OFFSET
1,5
EXAMPLE
Triangle begins:
1;
1, 1;
1, 2, 1;
1, 2, 2, 1;
1, 2, 2, 2, 1;
1, 2, 3, 3, 2, 1;
1, 2, 3, 3, 3, 2, 1;
1, 2, 3, 3, 3, 3, 2, 1;
1, 2, 3, 4, 4, 4, 3, 2, 1;
1, 2, 3, 4, 4, 4, 4, 3, 2, 1;
1, 2, 3, 4, 4, 4, 4, 4, 3, 2, 1;
1, 2, 3, 4, 5, 5, 5, 5, 4, 3, 2, 1;
1, 2, 3, 4, 5, 5, 5, 5, 5, 4, 3, 2, 1;
1, 2, 3, 4, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1;
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Omar E. Pol, Nov 10 2009
STATUS
approved