This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A323752 Fixed points of A323710. 2
 1, 6, 28, 40, 240, 544, 832, 1152, 2816, 50176, 118784, 131584, 409600, 1050624, 1056768, 1081344, 2031616, 8519680, 118489088, 201588736, 352321536, 6446645248, 15300820992, 25836912640, 104152956928, 150323855360, 1099545182208, 3315714752512, 4398583382016 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS If f(n) denotes the binary tree representation of n defined in A323710, then this sequence lists the n such that f(n) is symmetrical. LINKS Luc Rousseau, Table of n, a(n) for n = 1..200 Luc Rousseau, A program to compute this sequence (SWI-Prolog) EXAMPLE The recursive decomposition of 50176 with formula "parent = (2^left)*(2*right+1)" gives the following binary tree representation:          o         / \        /   \       /     \      o       o     / \     / \    o   o   o   o       /     \      o       o This tree is symmetrical, so 50176 is in the sequence. PROG (SWI-Prolog) See link. CROSSREFS Cf. A323710. Sequence in context: A071834 A295078 A055196 * A120624 A138873 A091307 Adjacent sequences:  A323749 A323750 A323751 * A323753 A323754 A323755 KEYWORD nonn AUTHOR Luc Rousseau, Jan 26 2019 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 October 15 21:17 EDT 2019. Contains 328038 sequences. (Running on oeis4.)