A337425 a(n) is the least prime of the form (3^j*5^k + 1)/2, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.

0, 23, 113, 563, 1013, 1823, 70313, 351563, 82013, 410063, 43945313, 1328603, 18452813, 1977539063, 0, 830376563, 538084013, 968551223, 13452100313, 1441625976563, 43584805013, 2145767211914063, 0, 0, 9806581127813, 6354664570823, 681012578320313, 441296150751563, 0

Offset

2,2

Links

Table of n, a(n) for n=2..30.

Crossrefs

Cf. A093625, A076481, A337423, A337424, A337426.

Sequence in context: A234252 A101804 A142324 * A233362 A288751 A070024

Adjacent sequences: A337422 A337423 A337424 * A337426 A337427 A337428

Keyword

nonn

Author

Hugo Pfoertner, Aug 27 2020

Status

approved