A257572 Prime root of n-th term in A257278.

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

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: A346651 A085694 A258570 * A343902 A160493 A053760

Adjacent sequences: A257569 A257570 A257571 * A257573 A257574 A257575

Keyword

nonn

Author

Reinhard Zumkeller, May 01 2015

Status

approved