Smallest number m such that m and m+1 have exactly n prime factors (counted with multiplicity).
2, 9, 27, 135, 944, 5264, 29888, 50624, 203391, 3290624, 6082047, 32535999
1 seqfan posts
Fri Aug 13 18:55:34 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).