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A252448
Inverse permutation to A249990.
4
2, 1, 4, 5, 7, 3, 9, 8, 11, 12, 18, 6, 13, 14, 16, 10, 20, 17, 24, 25, 31, 15, 26, 19, 22, 23, 33, 32, 39, 27, 29, 21, 35, 34, 37, 40, 50, 30, 41, 42, 48, 38, 52, 49, 60, 61, 71, 28, 43, 44, 46, 36, 54, 47, 62, 63, 69, 45, 64, 51, 58, 59, 73, 72, 83, 53, 56
OFFSET
1,1
PROG
(Haskell)
import Data.List (elemIndex); import Data.Maybe (fromJust)
a252448 = (+ 1) . fromJust . (`elemIndex` a249990_list)
CROSSREFS
Cf. A249990 (inverse), A252458 (fixed points).
Sequence in context: A110332 A052947 A159287 * A021992 A337123 A292388
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Dec 17 2014
STATUS
approved