A087294 Primes resulting from A087293.

113, 613, 24421, 2042221, 60731221, 102975601, 253102501, 327449641, 722798221, 2284271641, 46414646521, 57358506301, 89249322541, 129933236221, 185045469601, 215232948901, 323617365541, 554037063901, 732039110041, 2373042229801, 3076710505441, 3443735055601

Offset

1,1

Links

Table of n, a(n) for n=1..22.

Example

113 is in the sequence because ((prime(2)*prime(3))^2 + 1)/2 = ((3*5)^2 + 1)/2 = 113 is prime.

Crossrefs

Cf. A086893, A087293.

Sequence in context: A142024 A300964 A077287 * A152928 A185337 A365592

Adjacent sequences: A087291 A087292 A087293 * A087295 A087296 A087297

Keyword

nonn

Author

Ray Chandler, Aug 31 2003

Extensions

Offset changed to 1 and more terms from Jinyuan Wang, Aug 06 2021

Status

approved