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EXAMPLE
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Top left corner of the square array:
2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30
5, 11, 17, 23, 29, 35, 41, 47, 53, 59, 65, 71, 77, 83, 89
19, 39, 61, 81, 103, 123, 145, 165, 187, 207, 229, 249, 271, 291, 313
27, 57, 91, 121, 153, 183, 217, 247, 279, 309, 343, 373, 405, 435, 469
45, 97, 147, 199, 253, 301, 351, 403, 453, 507, 555, 609, 661, 709, 763
55, 117, 181, 243, 315, 379, 441, 505, 571, 633, 697, 759, 825, 889, 951
85, 177, 277, 369, 471, 567, 663, 757, 853, 949, 1045, 1141, 1239, 1333, 1431
109, 225, 345, 465, 589, 705, 829, 945, 1063, 1185, 1305, 1423, 1549, 1669, 1789
139, 295, 447, 603, 765, 913, 1075, 1227, 1377, 1537, 1689, 1843, 1999, 2155, 2313
157, 325, 493, 667, 835, 999, 1177, 1347, 1513, 1687, 1861, 2029, 2205, 2367, 2535
...
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