A099644 a[n]=Mod[q(n),PrimePi[q(n)]]=Mod[A001359(n), A000720(A001359(n))] where q(n) is the n-th lesser-twin-prime. A004648 restricted to lesser twins.

1, 2, 1, 3, 9, 2, 8, 11, 23, 23, 5, 9, 15, 19, 17, 31, 31, 41, 41, 55, 2, 14, 16, 16, 31, 49, 54, 52, 61, 59, 109, 111, 107, 117, 121, 164, 166, 169, 171, 181, 11, 23, 41, 35, 29, 29, 77, 71, 77, 71, 89, 83, 95, 107, 113, 125, 155, 149, 167, 173, 185, 185, 203, 197, 203, 209

Offset: 1

Author

Labos Elemer, Nov 04 2004

Keywords

• nonn

Comments

Sequence display diagram similar to that of A004648.

Examples

			n=9: p(26)=101 is the 9th lesser-twin-prime,
a(9)-Mod[p(26),26]=Mod[101,26]=23=a(9).
		

Crossrefs

Cf. A001359, A004648.