A050001 - OEIS

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A050001

a(n)=position of n in A050000.

1, 5, 2, 4, 19, 6, 16, 26, 3, 18, 23, 28, 10, 15, 20, 25, 61, 7, 12, 35, 17, 22, 76, 27, 45, 130, 9, 14, 135, 37, 73, 91, 24, 60, 127, 29, 47, 65, 11, 34, 52, 70, 88, 478, 21, 75, 124, 93, 359, 44, 62, 129, 594, 8, 49, 116, 13, 134, 506, 36, 54, 431, 72, 90, 139, 480, 41, 59 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`Inverse permutation to A050000: a(A050000(n)) = A050000(a(n)) = n.`
	LINKS	`Reinhard Zumkeller, Table of n, a(n) for n = 1..10000` `Index entries for sequences that are permutations of the natural numbers`
	PROG	`(Haskell)` `import Data.List (elemIndex)` `import Data.Maybe (fromJust)` `a050001 n = (fromJust $ elemIndex n a050000_list) + 1` `-- Reinhard Zumkeller, Nov 13 2011`
	CROSSREFS	`a(n) = k <=> A050000(k) = n.` `Sequence in context: A181050 A020800 A088507 * A166199 A008566 A111129` `Adjacent sequences: A049998 A049999 A050000 * A050002 A050003 A050004`
	KEYWORD	`nonn,easy`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`
	EXTENSIONS	`More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 16 2003`

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Last modified February 17 10:05 EST 2012. Contains 206009 sequences.