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A054426 Inverse permutation to A054424. 5
1, 2, 3, 4, 7, 8, 5, 6, 13, 19, 14, 15, 20, 16, 9, 10, 23, 34, 29, 35, 50, 43, 24, 25, 44, 53, 38, 30, 39, 26, 11, 12, 33, 59, 48, 66, 97, 84, 49, 60, 108, 132, 98, 86, 109, 75, 36, 37, 76, 112, 89, 99, 135, 113, 61, 54, 91, 100, 69, 55, 62, 40, 17, 18, 47, 82, 73, 105, 154 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..69.

Index entries for sequences that are permutations of the natural numbers

FORMULA

a(j) = nthmember(j, A054424)

MAPLE

nthmember := proc(e, l) local k; if(member(e, l, 'k')) then RETURN(k) else RETURN(0); fi; end;

MATHEMATICA

a[n_] := If[p = Position[A054424, n]; p != {}, p[[1, 1]], 0]; (* Jean-Fran├žois Alcover, Aug 20 2013 *)

CROSSREFS

Sequence in context: A223488 A175686 A305563 * A054424 A297164 A207800

Adjacent sequences:  A054423 A054424 A054425 * A054427 A054428 A054429

KEYWORD

nonn

AUTHOR

Antti Karttunen

STATUS

approved

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Last modified January 19 20:18 EST 2019. Contains 319310 sequences. (Running on oeis4.)