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A107831 Indices of primes occurring in A107811. 13
11, 2, 6, 5, 7, 4, 12, 9, 1, 10, 8, 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; internal format)
OFFSET

1,1

FORMULA

A107831(n)=pi(A107811(n))

CROSSREFS

Cf. A107801 - A107814, A107821, A107822, A107823, A107824, A107825, A107826, A107827, A107828, A107829, A107830, A107832, A107833, A107834.

Sequence in context: A010191 A064791 A074126 * A064928 A074335 A066795

Adjacent sequences:  A107828 A107829 A107830 * A107832 A107833 A107834

KEYWORD

easy,nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), May 24 2005

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Last modified February 15 19:15 EST 2012. Contains 205852 sequences.