A230489 Pseudoprimes n to base 2 such that n+2 and n+4 are primes.

87249, 831405, 1489665, 2113665, 31880577, 81612105, 84028407, 86559045, 274014885, 1778357505, 1853263365, 2276082537, 9090685605, 12300409857, 43620860865, 69654751377, 248342283645, 634038307449, 848282877345, 1123296404385, 1344952805505, 3307428792777

Offset

1,1

Links

Shyam Sunder Gupta, Table of n, a(n) for n = 1..1076

Example

87249 is a pseudoprime (base 2) and 87251 and 87253 are primes.

Crossrefs

Cf. A001567, A057942.

Sequence in context: A216257 A237410 A206632 * A372277 A098186 A069313

Adjacent sequences: A230486 A230487 A230488 * A230490 A230491 A230492

Keyword

nonn

Author

Shyam Sunder Gupta, Oct 20 2013

Status

approved