**Numbers n such that n and n+2 are both divisible by exactly 3 primes (counted with multiplicity).**

*18, 28, 42, 50, 66, 68, 76, 114, 170, 172, 186, 188, 236, 242, 244, 266, 273, 282, 284*

*4 seqfan posts*

*Thu Aug 12 21:07:41 CEST 2010* [seqfan] Re: Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).

*Thu Aug 12 20:48:48 CEST 2010* [seqfan] Re: Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).

*Thu Aug 12 20:24:17 CEST 2010* [seqfan] Re: Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).

*Thu Aug 12 20:05:40 CEST 2010* [seqfan] Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).

Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword

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