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Search: id:A026556
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| A026556 |
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a(n)=T(n,n-3), T given by A026552. Also a(n) = number of integer strings s(0),...,s(n) counted by T, such that s(n)=3. |
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1
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| 1, 3, 8, 24, 52, 156, 319, 954, 1910, 5696, 11304, 33648, 66514, 197778, 390266, 1159844, 2286996, 6795576, 13397075, 39809076, 78489235, 233262931, 460030947, 1367463642, 2697786052, 8021305890, 15830906756, 47082494816
(list; graph; listen)
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