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Search: id:A075651
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| A075651 |
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Group the natural numbers so that the n-th group contains n numbers with successive common difference n. The first member of a group is so chosen that the subsequent members of the group have not occurred earlier: (1), (2, 4), (3, 6, 9), (7, 11, 15, 19), (8, 13, 18, 23, 28), (14, 20, 26, 32, 38, 44), (20, 27, 34, 41, 48, 55, 62), ... Sequence gives {sum of members of the groups/n}. |
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5
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| 1, 3, 6, 13, 18, 29, 43, 59, 76, 105, 137, 149, 186, 253, 310, 341, 358, 495, 550, 589, 631, 739, 850, 945, 1018, 1219, 1298, 1105, 1589, 1735, 1826, 2013, 2079, 2315, 2418, 2629, 2954, 3251, 3366, 3601, 3962, 4211, 4422, 4941, 3469, 5355, 5402, 3209, 5836
(list; graph; listen)
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