OFFSET
1,1
EXAMPLE
1546 = 2*773 (between 1545 = 3*5*103 and 1547 = 7*13*17)
2066 = 2*1033 (between 2065 = 5*7*59 and 2067 = 3*13*53)
2234 = 2*1117 (between 2233 = 7*11*29 and 2235 = 3*5*149)
MATHEMATICA
SequencePosition[Table[FactorInteger[n][[;; , 2]], {n, 2, 15000}], {{1, 1, 1}, {1, 1}, {1, 1, 1}}][[;; , 2]] (* Amiram Eldar, Apr 23 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Massimo Kofler, Apr 23 2023
STATUS
approved