A080854 Numbers which can be expressed as the sum of two distinct primes in exactly five ways.

48, 54, 64, 70, 76, 104, 106, 118, 124, 134, 136, 146, 148, 164, 166, 188

Offset

1,1

Comments

Apparently there are no further terms beyond 188. - R. J. Mathar, Oct 01 2021

Links

Table of n, a(n) for n=1..16.

Formula

{j: A117929(j) = 5} . - R. J. Mathar, Oct 01 2021

Example

54 is a term as 54 = 31 + 23 = 37 + 17 = 41 + 13 = 43 + 11 = 47 + 7 are only the five ways to express 54 as a sum of two distinct primes.

Crossrefs

Cf. A077914 (2 ways), A077969 (3 ways), A078299 (4 ways), A080862 (6 ways).

Sequence in context: A258694 A328738 A067191 * A255267 A366250 A345503

Adjacent sequences: A080851 A080852 A080853 * A080855 A080856 A080857

Keyword

nonn

Author

Shyam Sunder Gupta, Mar 29 2003

Status

approved