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

1,2

Comments

Sequence display diagram similar to that of A004648.

Links

Table of n, a(n) for n=1..66.

Example

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.

Sequence in context: A189650 A083782 A076240 * A058113 A249456 A234746

Adjacent sequences: A099641 A099642 A099643 * A099645 A099646 A099647

Keyword

nonn

Author

Labos Elemer, Nov 04 2004

Status

approved