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A053811 Primes (in order) occurring in A053810. 2
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, 5, 59, 61, 67, 17, 71, 73, 79, 19, 83, 89, 2, 97, 101, 103, 107, 109, 23, 113, 127, 7, 131, 137, 139, 149, 151, 29, 157, 163, 167, 31, 173, 179, 181, 191, 193, 197, 199, 211, 223 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..66.

FORMULA

a(n) = A006530(A053810(n)) = A020639(A053810(n)). - David Wasserman, Feb 17 2006

PROG

(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

CROSSREFS

Cf. A000040, A000961, A025473.

Sequence in context: A023503 A241195 A039640 * A049840 A317018 A072039

Adjacent sequences:  A053808 A053809 A053810 * A053812 A053813 A053814

KEYWORD

easy,nonn

AUTHOR

Henry Bottomley, Mar 28 2000

EXTENSIONS

More terms from David Wasserman, Feb 17 2006

STATUS

approved

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Last modified March 31 19:37 EDT 2020. Contains 333151 sequences. (Running on oeis4.)