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 A133426 Analog of A060410 for the 7x+1 problem (cf. A133421). 2
 8, 50, 162, 470, 9584, 28400, 91890, 193040, 265070, 291824, 337100, 388830, 524070, 3231824, 18052070, 30949850, 31021880, 65552768, 774659600, 10276607888, 38128783428, 190067750300, 4835458627140, 25515567812750 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 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. LINKS N. J. A. Sloane, Table of n, a(n) for n=1..53 (from the web page of Tomás Oliveira e Silva) Tomás Oliveira e Silva, The px+1 problem Index entries for sequences related to 3x+1 (or Collatz) problem CROSSREFS Cf. A133421, A133425, A133419, ... Sequence in context: A300877 A301487 A299686 * A212063 A300318 A290617 Adjacent sequences: A133423 A133424 A133425 * A133427 A133428 A133429 KEYWORD nonn AUTHOR N. J. A. Sloane, Nov 27 2007 STATUS approved

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Last modified October 1 18:33 EDT 2023. Contains 365828 sequences. (Running on oeis4.)