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Search: id:A027296
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| A027296 |
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a(n) = Sum{T(n,k)*T(n,k+2)}, 0<=k<=[ (n-1)/2 ], T given by A026022. |
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| 1, 6, 22, 100, 345, 1470, 5096, 21120, 74175, 302698, 1076922, 4352140, 15660827, 62876490, 228468272, 913093664, 3345466023, 13326904266, 49176362780, 195434713432, 725586231766
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