1,2

Self-inverse permutation of natural numbers;

a(A052955(n)) = A027383(n);

a(A052955(n)-1)=a(A052955(n))/2; a(A052955(n)+1)=a(A052955(n))-1.

Almost certainly A132666 is a duplicate of this entry. - R. J. Mathar, Jun 12 2008

R. Zumkeller, Table of n, a(n) for n = 1..10000

Index entries for sequences that are permutations of the natural numbers

Sequence in context: A091857 A232642 A180625 * A132666 A116533 A087559

Adjacent sequences: A132337 A132338 A132339 * A132341 A132342 A132343

nonn

Reinhard Zumkeller, Aug 20 2007

approved