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A255479
Inverse permutation to A255582.
5
1, 2, 3, 4, 10, 5, 13, 6, 7, 8, 21, 9, 24, 11, 12, 16, 31, 14, 38, 18, 15, 23, 43, 20, 30, 22, 17, 25, 51, 28, 59, 27, 19, 29, 32, 37, 67, 36, 26, 34, 78, 35, 81, 39, 42, 41, 90, 44, 52, 46, 33, 48, 101, 47, 58, 50, 40, 49, 108, 55, 119, 57, 54, 64, 60, 63, 131, 66, 45, 62, 136, 68
OFFSET
1,2
COMMENTS
The differences |a(n)-A064664(n)| seem surprisingly small (see A255482).
About the definition: the map n -> A255582(n) is an element of the group of all permutations of the positive integers; this is the inverse of that permutation.
PROG
(Haskell)
import Data.List (elemIndex); import Data.Maybe (fromJust)
a255479 = (+ 1) . fromJust. (`elemIndex` a255582_list)
-- Reinhard Zumkeller, Mar 10 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 27 2015
STATUS
approved