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 A053811 Primes (in order) occurring in A053810. 2

%I

%S 2,2,3,5,3,2,7,11,5,2,13,3,17,7,19,23,29,31,11,37,41,43,2,3,13,47,53,

%T 5,59,61,67,17,71,73,79,19,83,89,2,97,101,103,107,109,23,113,127,7,

%U 131,137,139,149,151,29,157,163,167,31,173,179,181,191,193,197,199,211,223

%N Primes (in order) occurring in A053810.

%F a(n) = A006530(A053810(n)) = A020639(A053810(n)). - _David Wasserman_, Feb 17 2006

%o (PARI) LIM = prime(80)^2; v = vector(400); count = 0; forprime (p = 2, prime(80), x = 2; while (p^x <= LIM, count++; v[count] = p^x; x = nextprime(x + 1))); v = vecsort(vector(count, i, v[i])); A = vector(count); for (i = 1, count, f = factor(v[i]); A[i] = f[1, 1]); A - _David Wasserman_, Feb 17 2006

%Y Cf. A000040, A000961, A025473.

%K easy,nonn

%O 0,1

%A _Henry Bottomley_, Mar 28 2000

%E More terms from _David Wasserman_, Feb 17 2006

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Last modified June 5 01:27 EDT 2020. Contains 334828 sequences. (Running on oeis4.)