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A004978
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a(n)=least number m such that m-a(n-1) != a(j)-a(k) for all j,k less than n; a(1)=1, a(2)=2.
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4
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1, 2, 4, 8, 13, 21, 31, 45, 60, 76, 97, 119, 144, 170, 198, 231, 265, 300, 336, 374, 414, 456, 502, 550, 599, 649, 702, 759, 819, 881, 945, 1010, 1080, 1157, 1237, 1318, 1401, 1486, 1572, 1662, 1753, 1845, 1945, 2049, 2156, 2264
(list; graph; refs; listen; history; internal format)
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