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Search: id:A077690
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| A077690 |
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Rearrangement of triangular numbers such that the most significant digits follow the cyclic pattern 1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9,1,2,3,... |
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| 1, 21, 3, 45, 55, 6, 78, 820, 91, 10, 28, 36, 406, 528, 66, 703, 861, 903, 15, 210, 300, 435, 561, 630, 741, 8001, 946, 105, 231, 325, 465, 595, 666, 780, 8128, 990, 120, 253, 351, 496, 5050, 6105, 7021, 8256, 9045
(list; graph; listen)
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