A084111 Numbers m such that A084110(m) = m.

1, 2, 3, 5, 7, 11, 13, 16, 17, 19, 23, 29, 31, 37, 41, 43, 47, 48, 53, 59, 61, 67, 71, 73, 79, 80, 81, 83, 89, 97, 101, 103, 107, 109, 112, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257

Offset: 1

Author

Reinhard Zumkeller, May 12 2003

Keywords

• nonn

Comments

Primes are a subsequence; see A084112 for nonprimes.

A084110(a(n)) = a(n). - Reinhard Zumkeller, Jul 31 2014

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A084110, union of A000040 and A084112.

Programs

Haskell

a084111 n = a084111_list !! (n-1)
a084111_list = [x | x <- [1..], a084110 x == x]
-- Reinhard Zumkeller, Jul 31 2014