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Search: id:A086607
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| A086607 |
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Main diagonal of triangle A086606: the n-th term of the n-th self-convolution of the sequence formed by flattening triangle A086606. |
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3
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| 1, 2, 9, 32, 140, 630, 2870, 13256, 61389, 286710, 1346004, 6351516, 30088071, 142997456, 681498600, 3255674016
(list; graph; listen)
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