A199799 Totatives of 111111.

1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 23, 25, 29, 31, 32, 34, 38, 40, 41, 43, 46, 47, 50, 53, 58, 59, 61, 62, 64, 67, 68, 71, 73, 76, 79, 80, 82, 83, 85, 86, 89, 92, 94, 95, 97, 100, 101, 103, 106, 107, 109, 113, 115, 116, 118, 122, 124, 125, 127, 128, 131, 134

Offset

1,2

Comments

a(n) and 111111 are coprime, 111111 = 3*7*11*13*37; empty intersections with A008585, A008593, A008595, or A085959; sequence is finite with 51840 terms, A000010(111111) = 51840, last term: a(51840) = 111110.

Links

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

Eric Weisstein's World of Mathematics, Repunit

Eric Weisstein's World of Mathematics, Totative

Mathematica

Select[Range[200], CoprimeQ[#, 111111]&] (* Paolo Xausa, Sep 27 2023 *)

Prog

(Haskell)
a199799 n = a199799_list !! (n-1)
a199799_list = [x | x <- [1..111111], gcd x 111111 == 1]

Crossrefs

Cf. A109492 (divisors of 111111).

Sequence in context: A039895 A300351 A105425 * A032937 A126684 A089653

Adjacent sequences: A199796 A199797 A199798 * A199800 A199801 A199802

Keyword

nonn,fini

Author

Reinhard Zumkeller, Nov 11 2011

Status

approved