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A257465
Inverse permutation to A175498.
2
1, 2, 4, 3, 7, 5, 9, 13, 11, 6, 8, 10, 17, 21, 15, 12, 14, 19, 23, 25, 27, 31, 16, 18, 29, 22, 35, 20, 37, 33, 39, 24, 43, 26, 47, 28, 41, 49, 32, 45, 30, 51, 53, 55, 57, 36, 61, 34, 38, 64, 59, 40, 66, 68, 72, 44, 70, 76, 42, 48, 74, 78, 80, 46, 50, 84, 82
OFFSET
1,2
PROG
(Haskell)
import Data.List (elemIndex); import Data.Maybe (fromJust)
a257465 = (+ 1) . fromJust . (`elemIndex` a175498_list)
CROSSREFS
Cf. A175498.
Sequence in context: A084385 A073885 A256283 * A120234 A380489 A249571
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Apr 25 2015
STATUS
approved