A089995 Products of pairs of distinct, non-consecutive primes.

10, 14, 21, 22, 26, 33, 34, 38, 39, 46, 51, 55, 57, 58, 62, 65, 69, 74, 82, 85, 86, 87, 91, 93, 94, 95, 106, 111, 115, 118, 119, 122, 123, 129, 133, 134, 141, 142, 145, 146, 155, 158, 159, 161, 166, 177, 178, 183, 185, 187, 194, 201, 202, 203, 205, 206, 209, 213

Offset

1,1

Comments

m belongs to the sequence iff m=A001358(k) for some k and A089994(k)>0.

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Mathematica

With[{nn = 213}, TakeWhile[#, # <= nn &] &@ Union@ Flatten@ Table[Function[p, p Prime@ Range[n + 2, Prime@ PrimePi[nn/p]]]@ Prime@ n, {n, Sqrt@ nn}]] (* Michael De Vlieger, Feb 02 2017 *)

Crossrefs

Cf. A006881, A001358, A084126, A084127, A089994, A033476.

Sequence in context: A073487 A325161 A175586 * A231170 A348306 A337709

Adjacent sequences: A089992 A089993 A089994 * A089996 A089997 A089998

Keyword

nonn

Author

Reinhard Zumkeller, Nov 19 2003

Status

approved