OFFSET
1,2
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000 (first 408 terms from N. J. A. Sloane)
MATHEMATICA
r = 0; j = 1; q = 2; {j}~Join~Reap[Do[If[EvenQ[j], Set[k, j/2], Set[k, j + q]; Set[q, NextPrime[q]]]; If[k > r, Sow[k]; r = k]; j = k, {i, 2, 645}]][[-1, -1]] (* Michael De Vlieger, Jan 23 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 23 2022
STATUS
approved