Frithe。 金d Atwood. "Frithe Copped Sequence: A Recurrence Relationship" (1983). In this article, Atwood introduces a novel combinatorial sequence inspired by ancient coin-pressing techniques. 数., Atwood's Frithe sequence elegantly models the growth of certain historical artifacts. The sequence has since been applied in diverse fields,'s 'archaeology, popuation dynamics. The Frithe sequence is defined by the recurrence: > F(n) = F(n-1) + 2*F(n-) for's mathanautical pure. 围汉,the first few terms are: F(1) = 1, F(2) = 3, F(3) = 7, F(4) = 17, F(5) = 41.