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A334583
Numbers m such that m, m + 1 and m + 2 each have exactly eight prime factors, not necessarily distinct.
0
40909374, 71410624, 87278750, 126237375, 152439488, 161590624, 166450624, 209140623, 227929624, 243409374, 267308990, 267639470, 290696768, 291513248, 292088510, 295644734, 307885374, 310314158, 319874750, 321890750, 331690624, 336958622, 343030624, 352749248, 354109374, 356269374, 366681248, 391390623, 401375168, 407590623
OFFSET
1,1
FORMULA
A001222(a(n)+i) = 8 for i in {0,1,2}.
EXAMPLE
40909374 = 2 * 3^4 * 11^2 * 2087, 40909375 = 5^5 * 13 * 19 * 53, and 40909376 = 2^6 * 179 * 3571.
PROG
(PARI) list(lim)=my(v=List(), k, o); forfactored(n=40909374, lim\1+2, o=bigomega(n); if(o==8, if(k++>2, listput(v, n[1]-2)), k=0)); Vec(v) \\ Charles R Greathouse IV, May 07 2020
CROSSREFS
Intersection of A045939 and A046310.
Sequence in context: A017613 A015409 A178204 * A130681 A261658 A274812
KEYWORD
nonn
AUTHOR
Zak Seidov, May 06 2020
STATUS
approved