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A137263
Interprimes (A024675) == 2 (mod 3).
1
26, 50, 56, 86, 134, 170, 176, 236, 254, 260, 266, 356, 386, 446, 473, 506, 515, 560, 566, 590, 596, 650, 656, 680, 803, 944, 950, 974, 980, 1016, 1100, 1106, 1184, 1190, 1220, 1226, 1268, 1286, 1313, 1364, 1370, 1436, 1496, 1505, 1517, 1556, 1604, 1616
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
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
Cf. A024675.
Sequence in context: A364025 A324041 A375139 * A073249 A044078 A044459
KEYWORD
nonn
AUTHOR
Zak Seidov, Mar 12 2008, Mar 22 2008
STATUS
approved