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Search: id:A027242
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| A027242 |
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a(n) = Sum{T(n,k)*T(n,k+3), 0<=k<=n-3, T given by A026769. |
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| 1, 10, 68, 402, 2258, 12072, 64963, 338824, 1817063, 9467940, 51258781, 269085042, 1475551064, 7822940886, 43422818989, 232480179882
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