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A181441
a(n) = A114537(n,n), the (n-1)-fold application of the prime function starting with the n-th nonprime.
1
1, 7, 41, 331, 3001, 42043, 919913, 19734581, 440817757, 12501968177, 435748987787, 19638537755027, 692919372869953, 30634679101122821, 1695313841631390713
OFFSET
1,2
COMMENTS
Found when generalizing Matula numbers to labeled trees.
FORMULA
a(n) = prime^(n-1)(A018252(n)) = A114537(n,n).
EXAMPLE
a(3) = prime(prime(A018252(3))) = prime(prime(6)) = prime(13) = 41.
CROSSREFS
Sequence in context: A356298 A125120 A353992 * A290044 A379992 A209113
KEYWORD
nonn,more
AUTHOR
Raul Eduardo Capela Tello Rato (rtrato(AT)yahoo.com), Oct 20 2010
EXTENSIONS
a(9)-a(15) from Robert G. Wilson v, Mar 07 2017
STATUS
approved