A107821 - OEIS

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A107821

Indices of primes occurring in A107801.

14

1, 9, 2, 6, 5, 7, 4, 12, 11, 8, 10, 17, 3, 16, 14, 13, 15, 19, 18, 20, 21, 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

1,2

LINKS

Jinyuan Wang, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = pi(A107801(n)).

CROSSREFS

Cf. A107801 - A107814, A107822, A107823, A107824, A107825, A107826, A107827, A107828, A107829, A107830, A107831, A107832, A107833, A107834.

Sequence in context: A155168 A239628 A160262 * A154162 A046019 A021523

Adjacent sequences: A107818 A107819 A107820 * A107822 A107823 A107824

KEYWORD

nonn,easy

AUTHOR

Zak Seidov, May 24 2005

STATUS

approved