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A324112 Odd numbers n for which A324108(n) = A324054(n-1), and which themselves are not powers of primes (in A000961). 2
87, 2091, 16683, 33215, 267179, 1066877, 1319235, 4228521, 4330579, 8668351, 9769751, 34662043, 35924003, 50892875, 68239949, 83920375, 143201615, 151730823, 311513495, 419564887, 537386921, 538253299, 539511051, 605140375 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Odd terms > 1 in A324111.
LINKS
EXAMPLE
(Here f is A324054 and g is A324108).
87 is a term, as 87 = 3 * 29, f(3-1) = 4, f(29-1) = 156, and g(87) = 4 * 156 = 624 = f(87-1).
1066877 is a term, as 1066877 = 7^2 * 21773, f(49-1) = 133, f(21773-1) = 8035200, and g(1066877) = 133 * 8035200 = 1068681600 = f(1066877-1).
537386921 is a term, as 537386921 = 2083 * 257987, f(2083-1) = 1440, f(257987-1) = 31554095246856, and g(537386921) = 1440 * 31554095246856 = 45437897155472640 = f(537386921-1).
CROSSREFS
Cf. A324111.
Sequence in context: A201154 A171344 A200533 * A116269 A017803 A017750
KEYWORD
nonn,more
AUTHOR
Antti Karttunen, Feb 16 2019
STATUS
approved

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Last modified May 23 11:54 EDT 2024. Contains 372760 sequences. (Running on oeis4.)