A107831 Indices of primes occurring in A107811.

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

Offset

1,1

Links

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

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 A367812

Adjacent sequences: A107828 A107829 A107830 * A107832 A107833 A107834

Keyword

easy,nonn

Author

Zak Seidov, May 24 2005

Status

approved