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Search: id:A000718
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| A000718 |
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Boustrophedon transform of triangular numbers 1,1,3,6,10,... |
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+0
2
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| 1, 2, 6, 20, 65, 226, 883, 3947, 20089, 115036, 732171, 5126901, 39165917, 324138010, 2888934623, 27587288507, 281001801969, 3041152133848, 34849036364659, 421526126267265, 5367037330561365, 71752003756908550
(list; graph; listen)
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