The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A227741 Simple self-inverse permutation of natural numbers: List each block of A005811(n) numbers from A173318(n-1)+1 to A173318(n) in reverse order. 7
 1, 3, 2, 4, 6, 5, 9, 8, 7, 11, 10, 12, 14, 13, 17, 16, 15, 21, 20, 19, 18, 24, 23, 22, 26, 25, 29, 28, 27, 31, 30, 32, 34, 33, 37, 36, 35, 41, 40, 39, 38, 44, 43, 42, 48, 47, 46, 45, 53, 52, 51, 50, 49, 57, 56, 55, 54, 60, 59, 58, 62, 61, 65, 64, 63, 69, 68, 67, 66 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This permutation maps between such irregular tables as A101211 and A227736 which are otherwise identical, except for the order in which the lengths of runs have been listed. In other words, A227736(n) = A101211(a(n)) and vice versa, A101211(n) = A227736(a(n)). LINKS Antti Karttunen, Table of n, a(n) for n = 1..1001 FORMULA a(n) = A173318(A227737(n)) - A227740(n). PROG (Scheme) (define (A227741 n) (- (A173318 (A227737 n)) (A227740 n))) CROSSREFS Cf. A227742 (gives the fixed points). Cf. also A227737, A227740, A005811, A173318. Sequence in context: A093573 A126290 A277377 * A059417 A078824 A014685 Adjacent sequences:  A227738 A227739 A227740 * A227742 A227743 A227744 KEYWORD nonn AUTHOR Antti Karttunen, Jul 25 2013 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 25 13:47 EST 2020. Contains 338623 sequences. (Running on oeis4.)