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A107825 Indices of primes occurring in A107805. 13
5, 6, 2, 9, 1, 10, 8, 7, 4, 12, 11, 13, 14, 15, 19, 18, 20, 21, 16, 3, 17, 22, 24, 23, 27, 26, 28, 25, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..61.

FORMULA

A107825(n)=pi(A107805(n))

CROSSREFS

Cf. A107801 - A107814, A107821, A107822, A107823, A107824, A107826, A107827, A107828, A107829, A107830, A107831, A107832, A107833, A107834.

Sequence in context: A154801 A253094 A217015 * A201332 A049253 A072733

Adjacent sequences:  A107822 A107823 A107824 * A107826 A107827 A107828

KEYWORD

easy,nonn

AUTHOR

Zak Seidov, May 24 2005

STATUS

approved

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Last modified April 14 22:47 EDT 2021. Contains 342971 sequences. (Running on oeis4.)