A202341 Numbers occurring exactly once in Hofstadter H-sequence A005374.

0, 2, 3, 6, 8, 9, 11, 12, 15, 16, 19, 21, 22, 25, 27, 28, 30, 31, 34, 36, 37, 39, 40, 43, 44, 47, 49, 50, 52, 53, 56, 57, 60, 62, 63, 66, 68, 69, 71, 72, 75, 76, 79, 81, 82, 85, 87, 88, 90, 91, 94, 96, 97, 99, 100, 103, 104, 107, 109, 110, 113, 115, 116, 118

Offset

1,2

Comments

A202340(a(n)) = 1.

Links

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

Eric Weisstein's World of Mathematics, Hofstadter H-Sequence.

Wikipedia, Hofstadter sequence

Index entries for Hofstadter-type sequences

Prog

(Haskell)
import Data.List (elemIndices)
a202341 n = a202341_list !! (n-1)
a202341_list = elemIndices 1 a202340_list

Crossrefs

Cf. A005374, A202340, A202342 (complement).

Sequence in context: A344166 A201822 A093510 * A013948 A187478 A269860

Adjacent sequences: A202338 A202339 A202340 * A202342 A202343 A202344

Keyword

nonn

Author

Reinhard Zumkeller, Dec 17 2011

Status

approved