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Search: id:A006947
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| A006947 |
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Two-rowed truncated monotone triangles. (Formerly M1797)
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+0 1
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| 2, 7, 35, 219, 1594, 12935, 113945, 1070324, 10586856, 109259633, 1168384157, 12877168147, 145656436074, 1685157199175, 19886174611045
(list; graph; listen)
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