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A118968
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a(4n+k)=(k+1)*binomial(5n+k,n)/(4n+k+1), k=0,..3.
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4
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1, 1, 1, 1, 1, 2, 3, 4, 5, 11, 18, 26, 35, 80, 136, 204, 285, 665, 1155, 1771, 2530, 5980, 10530, 16380, 23751, 56637, 100688, 158224, 231880, 556512, 996336, 1577532, 2330445, 5620485, 10116873, 16112057, 23950355, 57985070, 104819165
(list; graph; refs; listen; history; internal format)
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