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 A257572 Prime root of n-th term in A257278. 4
 2, 2, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 2, 3, 5, 2, 3, 2, 5, 2, 3, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 7, 2, 3, 5, 2, 2, 3, 7, 2, 5, 3, 2, 2, 7, 3, 5, 2, 3, 2, 5, 2, 7, 3, 2, 2, 3, 5, 7, 2, 3, 2, 5, 2, 3, 7, 2, 5, 3, 2, 2, 3, 7, 2, 5, 2, 3, 11, 2, 7, 5, 3, 2, 2, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) = A020639(A257278(n)); A257278(n) = a(n) ^ A257573(n); a(n) <= A257573(n) by definition of A257278. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 PROG (Haskell) a257572 = a020639 . a257278 CROSSREFS Cf. A257278, A020639, A025473, A257573. Sequence in context: A290839 A085694 A258570 * A160493 A053760 A223942 Adjacent sequences:  A257569 A257570 A257571 * A257573 A257574 A257575 KEYWORD nonn AUTHOR Reinhard Zumkeller, May 01 2015 STATUS approved

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Last modified October 22 17:55 EDT 2019. Contains 328319 sequences. (Running on oeis4.)