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Search: id:A116640
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A116640 a(n) = A116623(A059893(n)). +0
2
1, 5, 7, 19, 11, 23, 29, 65, 19, 31, 37, 73, 49, 85, 103, 211, 35, 47, 53, 89, 65, 101, 119, 227, 89, 125, 143, 251, 179, 287, 341, 665, 67, 79, 85, 121, 97, 133, 151, 259, 121, 157, 175, 283, 211, 319, 373, 697, 169, 205, 223, 331, 259, 367, 421, 745, 331 (list; graph; listen)
OFFSET

0,2

COMMENT

Viewed as a binary tree, this is (1); 5; 7,19; 11,23,29,65; ... Cf. A116623.

LINKS

Index entries for sequences related to 3x+1 (or Collatz) problem

CROSSREFS

Cf. a(A000225(n)) = A001047(n+1). For n>= 1 a(A000079(n)) = A062709(n+1).

Sequence in context: A138919 A153192 A028319 this_sequence A116623 A046151 A046078

Adjacent sequences: A116637 A116638 A116639 this_sequence A116641 A116642 A116643

KEYWORD

nonn,tabf

AUTHOR

Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Feb 20 2006. Proposed by Pierre Lamothe (plamothe(AT)aei.ca), May 21 2004.

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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