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Search: id:A133426
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| 8, 50, 162, 470, 9584, 28400, 91890, 193040, 265070, 291824, 337100, 388830, 524070, 3231824, 18052070, 30949850, 31021880, 65552768, 774659600, 10276607888, 38128783428, 190067750300, 4835458627140, 25515567812750
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OFFSET
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1,1
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COMMENT
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The 7x+1 map sends x to x/2 if x is even, x/3 if x is divisible by 3, x/5 if x is divisible by 5, otherwise 7x+1.
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LINKS
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N. J. A. Sloane, Table of n, a(n) for n=1..53 (from the web page of Tomas Oliveira e Silva)
Tomas Oliveira e Silva, The px+1 problem
Index entries for sequences related to 3x+1 (or Collatz) problem
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CROSSREFS
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Cf. A133421, A133425, A133419, ...
Sequence in context: A038481 A043015 A076286 this_sequence A033463 A030279 A133357
Adjacent sequences: A133423 A133424 A133425 this_sequence A133427 A133428 A133429
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KEYWORD
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nonn
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AUTHOR
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njas, Nov 27 2007
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