A242325 Prime terms in the tribonacci-like sequence A214827.

5, 5, 11, 37, 127, 233, 1451, 4909, 9029, 16607, 103333, 37314473023, 232180447061, 2657194941637, 13356042204482014297297131147848321, 4717604056747741831285902446873182186115052544834224581062711115537322612895948580479

Offset: 1

Author

Robert Price, May 10 2014

Keywords

• nonn

Comments

a(17) is too large to display here having 133 digits. It corresponds to A214827(501).

Crossrefs

Cf. A001590, A100683, A231574, A231575, A232543, A214899, A020992, A233554. A214727, A234696, A141523, A235862,A214825, A235873, A214827, A242324.

Programs

Mathematica

a={1,5,5}; Print[5]; Print[5]; For[n=3, n<=1000, n++, sum=Plus@@a; If[PrimeQ[sum], Print[sum]]; a=RotateLeft[a]; a[[3]]=sum]