The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A360840 3-full numbers (A036966) sandwiched between twin primes. 5
 432, 2592, 139968, 444528, 472392, 995328, 3456000, 5174928, 6561000, 10125000, 15552000, 15804072, 17496000, 25299648, 28449792, 37340352, 54675000, 63700992, 85957848, 88723728, 99574272, 120891312, 144027072, 169869312, 177147000, 197413632, 253125000, 259308000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 Eric Weisstein's World of Mathematics, Twin Primes. Wikipedia, Powerful number: Generalization. Index entries for sequences related to powerful numbers. EXAMPLE 432 = 2^4 * 3^3 is a term since it is 3-full and 431 and 433 are twin primes. MATHEMATICA Select[6*Range[10^6], PrimeQ[# - 1] && PrimeQ[# + 1] && Min[FactorInteger[#][[;; , 2]]] > 2 &] PROG (PARI) is(n) = isprime(n-1) && isprime(n+1) && vecmin(factor(n)[, 2]) > 2; CROSSREFS Intersection of A014574 and A036966. Subsequence of A113839. Sequence in context: A250815 A006910 A015229 * A248460 A234327 A174717 Adjacent sequences: A360837 A360838 A360839 * A360841 A360842 A360843 KEYWORD nonn AUTHOR Amiram Eldar, Feb 23 2023 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified July 14 19:09 EDT 2024. Contains 374323 sequences. (Running on oeis4.)