This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A277695 Permutation of natural numbers: a(1) = 1; for n > 1, if A277815(n) = 0, a(n) = 2*a(A277814(n)-1), otherwise a(n) = 1 + 2*a(A277815(n)). 6
 1, 2, 4, 8, 3, 16, 6, 32, 12, 5, 13, 64, 7, 24, 10, 26, 128, 14, 27, 17, 25, 49, 48, 20, 257, 11, 21, 52, 15, 256, 28, 54, 34, 50, 55, 98, 515, 99, 9, 65, 31, 29, 97, 105, 51, 96, 40, 514, 22, 101, 43, 35, 1031, 513, 81, 42, 69, 23, 57, 104, 63, 30, 512, 56, 108, 68, 111, 100, 139, 199, 163, 110, 196, 203, 19, 211, 2063, 33, 195, 53, 1030, 47 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Antti Karttunen, Table of n, a(n) for n = 1..10000 FORMULA a(1) = 1; for n > 1, if A277815(n) = 0 [when n is in A277817], a(n) = 2*a(A277814(n)-1), otherwise a(n) = 1 + 2*a(A277815(n)). a(1) = 1, a(A277817(1+n)) = 2*a(n), a(A277816(n)) = 1 + 2*a(n). [Implicit form.] PROG (Scheme, with memoization-macro definec) (definec (A277695 n) (cond ((= 1 n) n) ((zero? (A277815 n)) (* 2 (A277695 (+ -1 (A277814 n))))) (else (+ 1 (* 2 (A277695 (A277815 n))))))) CROSSREFS Inverse: A277696. Cf. A264977, A277710, A277814, A277815, A277816, A277817. Sequence in context: A052331 A242365 A119436 * A317503 A243505 A243065 Adjacent sequences:  A277692 A277693 A277694 * A277696 A277697 A277698 KEYWORD nonn AUTHOR Antti Karttunen, Nov 06 2016 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 December 11 12:33 EST 2019. Contains 329916 sequences. (Running on oeis4.)