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Search: id:A082224
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| A082224 |
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Square array read by antidiagonals alternately upwards and downwards. a(i, j) is the least positive integer not occurring earlier in the sequence such that (1) if j > 1, then the j-th partial sum of the i-th row is prime; and (2) if i > 1, then the i-th partial sum of the j-th column is composite. |
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+0
9
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| 1, 2, 3, 4, 8, 10, 6, 12, 15, 7, 5, 24, 18, 14, 22, 20, 16, 30, 28, 26, 13, 9, 40, 36, 38, 34, 44, 42, 46, 52, 48, 54, 60, 50, 32, 21, 11, 58, 56, 64, 66, 72, 62, 74, 78, 80, 70, 82, 84, 76, 90, 94, 88, 68, 17, 19, 92, 100, 96, 86, 102, 98, 112, 104, 108, 114, 120, 122, 106
(list; graph; listen)
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