OFFSET
1,1
REFERENCES
Antal Balog, On the largest prime factor of consecutive integers, Abstracts Amer. Math. Soc., 25 (No. 2, 2002), p. 337, #975-11-76.
LINKS
T. D. Noe, Table of n, a(n) for n = 1..1000
P. Erdős and C. Pomerance, On the largest prime factors of n and n+1, Aequationes Math. 17 (1978), p. 311-321. [alternate link]
MATHEMATICA
gpf[n_] := FactorInteger[n][[-1, 1]]; ind = Position[Differences[Array[gpf, 200]], _?(# > 0 &)] // Flatten; ind[[Position[Differences[ind], _?(# > 1 &)] // Flatten]] (* Amiram Eldar, Jun 06 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 25 2003
STATUS
approved