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Search: id:A054881
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| A054881 |
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Number of walks of length n along the edges of an octahedron starting and ending at a vertex, and also ( with a(0)=0 ) between two opposite vertices. |
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+0 4
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| 1, 0, 4, 8, 48, 160, 704, 2688, 11008, 43520, 175104, 698368, 2797568, 11182080, 44744704, 178946048, 715849728, 2863267840, 11453333504, 45812809728, 183252287488, 733007052800, 2932032405504, 11728121233408
(list; graph; listen)
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