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A124747 Inverse of number triangle A124744. 2
1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 2, 2, 2, 1, 0, 0, 3, 3, 3, 2, 1, 0, 0, 7, 7, 7, 5, 3, 1, 0, 0, 12, 12, 12, 9, 6, 3, 1, 0, 0, 30, 30, 30, 23, 16, 9, 4, 1, 0, 0, 55, 55, 55, 43, 31, 19, 10, 4, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
0,18
COMMENTS
Third column and row sums give A047749.
LINKS
EXAMPLE
Triangle begins
1,
0, 1,
0, 0, 1,
0, 0, 1, 1,
0, 0, 1, 1, 1,
0, 0, 2, 2, 2, 1,
0, 0, 3, 3, 3, 2, 1,
0, 0, 7, 7, 7, 5, 3, 1,
0, 0, 12, 12, 12, 9, 6, 3, 1
CROSSREFS
Sequence in context: A078336 A076441 A319289 * A334888 A039981 A006140
KEYWORD
nonn,tabl
AUTHOR
Paul Barry, Nov 06 2006
STATUS
approved

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)