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A234944 Array read by antidiagonals: T(i,j) = number of different optimal difference triangle sets M(i,j). 3
1, 1, 1, 1, 3, 1, 1, 12, 2, 2, 1, 8, 9, 1, 4, 1, 21, 12, 4, 2, 5, 1, 720, 174, 6, 3, 2, 1, 1, 4079, 3132, 92, 1, 4, 1, 1, 1, 3040, 71930, 117 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,5
COMMENTS
This array gives the number of different ways to choose the optimal difference triangle sets M(i,j) described in A234943.
LINKS
EXAMPLE
Array begins:
j\i| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
-----------------------------------------------------------------
1 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (A000012)
2 | 1, 3, 12, 8, 21, 720, 4079, 3040, 20505, 1669221, 14708525, 10567748, (A234947)
3 | 1, 2, 9, 12, 174, 3132, 71930, (A234945)
4 | 2, 1, 4, 6, 92, 117, (A234946)
5 | 4, 2, 3, 1,
6 | 5, 2, 4, 4,
7 | 1, 1, 1,
8 | 1, 2,
9 | 1, 1,
10 | 2,
11 | 1
12 | 1
13 | 1
14 | 1
15 | 1
The entries match those in A234943.
CROSSREFS
Rows give A234947, A234945, A234946.
Cf. A234943.
Sequence in context: A176421 A168552 A111473 * A067402 A113340 A134523
KEYWORD
nonn,tabl,more
AUTHOR
N. J. A. Sloane, Jan 08 2014
STATUS
approved

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Last modified July 22 07:42 EDT 2024. Contains 374481 sequences. (Running on oeis4.)