1,6

a(n) = A000040(n) - A004087(n).

R. Zumkeller, Table of n, a(n) for n = 1..10000 current versions:

a(10)=29-92=-63; a(20)=71-17=54, a(7)=17-71=-54.

Cf. A056965, A061227.

Sequence in context: A052902 A059137 A096011 this_sequence A044120 A056808 A044501

Adjacent sequences: A068393 A068394 A068395 this_sequence A068397 A068398 A068399

sign,base,nice

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Mar 08 2002