1,4

a(n) = A116084(n+1) - A116084(n);

for primes p: a(p-1) = A000009(p) - 1.

Cf. A115856.

Sequence in context: A079501 A093335 A093333 this_sequence A085570 A059850 A051630

Adjacent sequences: A116082 A116083 A116084 this_sequence A116086 A116087 A116088

nonn

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 04 2006