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 A057689 Maximal term in trajectory of P under the `Px+1' map, where P = n-th prime, or -1 if no such term exists. 8
 16, 66, 50, 672, 20372, 494, 36918, 1404, 12210, 4248, 5070, 1682, 1850, 2210, 35882, 102720, 94484303672, 30084, 178992, 5330, 246560, 6890, 294253314, 8416400, 515202, 134004, 2810784, 2810883506682183650, 377198408, 320168 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 COMMENTS See A057684 for definition. LINKS T. D. Noe, Table of n, a(n) for n=2..1000 EXAMPLE For n=3, P=7: trajectory of 7 is 7, 50, 25, 5, 1, 8, 4, 2, 1, 8, 4, 2, 1, 8, 4, 2, 1, ..., which has maximal term 50, cycle length 4 and there are 4 terms before it enters the cycle. CROSSREFS Cf. A057446, A057216, A057522, A057534, A057614. See also A033478, A057688, A057684, A057685, A057686, A057687, A057690, A057691. Sequence in context: A119285 A253673 A041494 * A045024 A043153 A039330 Adjacent sequences:  A057686 A057687 A057688 * A057690 A057691 A057692 KEYWORD nonn,nice,easy AUTHOR N. J. A. Sloane, Oct 20 2000 EXTENSIONS More terms from Larry Reeves (larryr(AT)acm.org), Nov 08 2000 STATUS approved

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Last modified January 22 11:56 EST 2019. Contains 319363 sequences. (Running on oeis4.)