

A088680


a(n) = prime(2n+1)  prime(2n).


5



2, 4, 4, 4, 2, 4, 4, 6, 6, 2, 4, 8, 2, 2, 14, 6, 10, 6, 4, 6, 10, 4, 12, 4, 4, 2, 6, 6, 6, 2, 14, 2, 14, 10, 4, 8, 6, 6, 4, 10, 10, 6, 6, 4, 4, 8, 8, 6, 2, 6, 6, 2, 10, 6, 6, 4, 12, 2, 6, 2, 4, 8, 8, 8, 6, 8, 4, 4, 10, 2, 2, 2, 14, 2, 14, 2, 20, 8, 8, 6, 14, 6, 8, 12, 6, 10, 6, 2, 2, 18, 2, 6, 8, 6, 2
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OFFSET

0,1


COMMENTS

Partition the primes into pairs starting with 3: (3, 5), (7, 11), (13, 17), (19, 23), (29, 31), (37, 41), (43, 47). Sequence gives differences between pairs.
A bisection of A001223.


LINKS

Table of n, a(n) for n=0..94.


MATHEMATICA

Table[Prime[2n + 1]  Prime[2n], {n, 100}] (* Robert G. Wilson v, May 29 2004 *)


CROSSREFS

Cf. A078584, A088682, A088683, A088684, A078584.
Sequence in context: A097541 A151819 A079560 * A143194 A036264 A105192
Adjacent sequences: A088677 A088678 A088679 * A088681 A088682 A088683


KEYWORD

base,easy,nonn


AUTHOR

Zak Seidov, Oct 05 2003


EXTENSIONS

Edited by Robert G. Wilson v, May 29 2004


STATUS

approved



