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EXAMPLE
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The initial rows of the array are:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ...
1, 4, 8, 13, 19, 26, 34, 43, 53, 64, 76, 89, ...
2, 8, 16, 27, 40, 56, 74, 95, 118, 144, 172, 203, ...
3, 13, 27, 46, 69, 98, 130, 168, 210, 257, 308, 365, ...
4, 19, 40, 69, 104, 149, 198, 257, 322, 395, 474, 563, ...
5, 26, 56, 98, 149, 214, 285, 371, 466, 573, 688, 818, ...
6, 34, 74, 130, 198, 285, 380, 496, 624, 768, 922, 1097, ...
7, 43, 95, 168, 257, 371, 496, 648, 816, 1005, 1207, 1437, ...
8, 53, 118, 210, 322, 466, 624, 816, 1028, 1267, 1522, 1813, ...
9, 64, 144, 257, 395, 573, 768, 1005, 1267, 1562, 1877, 2237, ...
10, 76, 172, 308, 474, 688, 922, 1207, 1522, 1877, 2256, 2690, ...
...
The initial antidiagonals are:
0
1, 1
2, 4, 2
3, 8, 8, 3
4, 13, 16, 13, 4
5, 19, 27, 27, 19, 5
6, 26, 40, 46, 40, 26, 6
7, 34, 56, 69, 69, 56, 34, 7
8, 43, 74, 98, 104, 98, 74, 43, 8
9, 53, 95, 130, 149, 149, 130, 95, 53, 9
10, 64, 118, 168, 198, 214, 198, 168, 118, 64, 10
...
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