OFFSET
1,1
LINKS
Indranil Ghosh, Table of n, a(n) for n = 1..807
EXAMPLE
107 is a term in the sequence, since 107_10=1223_4, and 223_4, 23_4 and 3_4 (43_10, 11_10, and 3_10) are all prime.
CROSSREFS
Also, cf. A278699 for base 4, where the final suffix cannot be 1 (it must be a prime, i.e., 2 or 3).
KEYWORD
nonn,base
AUTHOR
Randy L. Ekl, Dec 23 2016
STATUS
approved