2,1

Well-defined since A064916(n) < n for nonprimes.

a(p) = p for all primes p.

Harry J. Smith, Table of n, a(n) for n = 2..1000

Michael Gilleland, Some Self-Similar Integer Sequences

a(6) = 3 as A064916(6) = 4 and A064916(4) = 3.

(PARI) lpf(n)= { local(f); f=factor(n); return(f[1, 1]) } { for (n=2, 1000, m=n; while (!isprime(m), L=lpf(m); m=m / L + L - 1); write("b064917.txt", n, " ", m) ) } \\ Harry J. Smith, Sep 29 2009

Cf. A064916, A064918, A064921.

Sequence in context: A177980 A215405 A064921 * A154727 A323075 A065070

Adjacent sequences: A064914 A064915 A064916 * A064918 A064919 A064920

nonn

Reinhard Zumkeller, Oct 14 2001

approved