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Search: id:A026288
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| A026288 |
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Number of (s(0), s(1), ..., s(n)) such that every s(i) is an integer, s(0) = 0, s(1) = 1, s(n) = 2, |s(i) - s(i-1)| <= 1 for i >= 2, |s(2) - s(1)| = 1, |s(3) - s(2)| = 1 if s(2) = 1. Also T(n,n-2), where T is the array in A026268. |
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| 1, 2, 5, 14, 38, 104, 285, 784, 2164, 5994, 16658, 46442, 129868, 364182, 1023960, 2886174, 8153952, 23086374, 65497653, 186175794, 530148414, 1512174076, 4320093569, 12360382436, 35414530188, 101603373430, 291864076387, 839402336610
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