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A129737 List of primitive prime divisors of the numbers 4^n-3^n (A005061) in their order of occurrence. 2
7, 37, 5, 11, 71, 13, 14197, 337, 6553, 181, 23, 174659, 193, 131, 500111, 379, 61, 601, 17, 4241, 17050729021, 19, 163, 10814953, 25309, 8861, 8352709, 727, 859, 47, 44483, 17389, 1933, 51361, 1440528320401, 313, 31357, 36174709, 2053, 29, 376853, 59, 349 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Read A005061 term-by-term, factorize each term, write down any primes not seen before.

LINKS

Table of n, a(n) for n=1..43.

G. Everest et al., Primes generated by recurrence sequences, Amer. Math. Monthly, 114 (No. 5, 2007), 417-431.

K. Zsigmondy, Zur Theorie der Potenzreste, Monatsh. Math., 3 (1892), 265-284.

CROSSREFS

Cf. A005061, A129736, A059801, A129733.

Sequence in context: A020085 A120106 A240274 * A176544 A281994 A246603

Adjacent sequences:  A129734 A129735 A129736 * A129738 A129739 A129740

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 13 2007

STATUS

approved

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Last modified December 12 07:31 EST 2019. Contains 329948 sequences. (Running on oeis4.)