OFFSET
1,1
COMMENTS
All terms are even numbers.
EXAMPLE
4104 = 2^3 * 3^3 * 19 (between 4103 = 11 * 373 and 4105 = 5 * 821).
171288 = 2^3 * 3^3 * 13 * 61 (between 171287 = 157 * 1091 and 171289 = 103 * 1663).
1728216 = 2^3 * 3^5 * 7 * 127 (between 1728215 = 5 * 345643 and 1728217 = 617 * 2801).
MATHEMATICA
Select[Import["https://oeis.org/A001235/b001235.txt", "Table"][[;; , 2]], # < 1.5*10^8 && PrimeOmega[# + {-1, 1}] == {2, 2} &] (* Amiram Eldar, May 16 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Massimo Kofler, May 16 2024
STATUS
approved