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Search: id:A055503
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| A055503 |
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Take n points in general position in plane; draw all lines joining them; sequence gives number of connected regions formed. |
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| 1, 0, 2, 7, 18, 41, 85, 162, 287, 478, 756, 1145, 1672, 2367, 3263, 4396, 5805, 7532, 9622, 12123, 15086, 18565, 22617, 27302, 32683, 38826, 45800, 53677, 62532, 72443, 83491, 95760, 109337, 124312, 140778, 158831, 178570, 200097
(list; graph; listen)
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