OFFSET
1,1
COMMENTS
In other words, a(n) -/+ d are consecutive primes;
all d's are multiples of 3 and most d's are even;
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
Examples of pairs {a(n),d} with first occurrences of d:
{26,3}, {473,6}, {1268,9}, {4535,12}, {5366,15}, {9569,18}, {38522,21}, {28253,24}, {40316,27}, {43361,30}, {162176,33}, {31433,36}, {370988,39}, {461759,42}, {576836,45}, {360701,48}, {492170,57}.
MATHEMATICA
Select[Mean/@Partition[Prime[Range[2, 300]], 2, 1], Mod[#, 3]==2&] (* Harvey P. Dale, Jun 04 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Mar 12 2008, Mar 22 2008
STATUS
approved