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Search: id:A075312
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| A075312 |
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Pair the natural numbers (1,2),(3,5),(4,7),(6,10),(8,13),(9,15),(11,18),(12,20),(14,23),(16,26),... such that the k-th pair is (r,r+k) and r is the smallest number not occurring earlier. This is the sequence of the product of the members of a pair. |
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1
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| 2, 15, 28, 60, 104, 135, 198, 240, 322, 416, 476, 589, 714, 792, 936, 1025, 1188, 1363, 1470, 1664, 1782, 1995, 2220, 2356, 2600, 2856, 3010, 3285, 3450, 3744, 4050, 4233, 4558, 4895, 5096, 5452, 5664, 6039, 6426, 6656, 7062, 7303, 7728, 8165, 8424, 8880
(list; graph; listen)
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