A095928 Max{GreatestPrimeFactor(prime(i)+prime(n-i)): 1<=i<n}, a(1)=1.

1, 2, 5, 7, 3, 13, 7, 19, 7, 11, 31, 13, 17, 43, 19, 23, 23, 61, 31, 29, 73, 37, 37, 41, 43, 43, 103, 47, 109, 47, 53, 53, 59, 139, 67, 151, 71, 73, 73, 83, 73, 181, 89, 193, 97, 199, 89, 101, 107, 229, 109, 107, 241, 109, 113, 127, 113, 271, 131, 137, 283, 139

Offset

1,2

Links

Table of n, a(n) for n=1..62.

Crossrefs

Cf. A006530, A000040.

Sequence in context: A073929 A361329 A076555 * A100114 A078319 A246207

Adjacent sequences: A095925 A095926 A095927 * A095929 A095930 A095931

Keyword

nonn

Author

Reinhard Zumkeller, Jul 12 2004

Status

approved