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A222291 Least number whose Collatz (3x+1) trajectory has a number greater than 10^n. 3
1, 3, 15, 27, 255, 703, 1819, 9663, 26623, 77671, 159487, 1212415, 4637979, 6631675, 19638399, 80049391, 319804831, 319804831, 319804831, 8528817511, 59436135663, 231913730799, 272025660543, 871673828443, 3716509988199, 3716509988199, 3716509988199 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
Hisanori Mishima, Relation between n and max(n) (part of a chapter about the Collatz conjecture; errors in higher values)
Eric Roosendaal, 3x+1 path records
CROSSREFS
Cf. A006884 (3x+1 records), A222292 (base-2 version).
Cf. A224538.
Sequence in context: A002259 A050848 A077785 * A015646 A242571 A067144
KEYWORD
nonn,base
AUTHOR
T. D. Noe, Feb 19 2013
STATUS
approved

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Last modified May 25 22:55 EDT 2024. Contains 372806 sequences. (Running on oeis4.)