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Factor tables
A085398: Least k>1 such that n-th cyclotomic polynomial evaluated at k is prime
A001333: Numerators of continued fraction convergents to sqrt(2)
A000129: Pell numbers
A001110: Square triangular numbers
A024451: The numerator of Sum_{i = 1..n} 1/prime(i)
A343157: Trajectory of 407 under the map x -> A084317(x)
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