OFFSET
0,1
COMMENTS
a(n) is prime for n = 0, 1, 2, 3, 4. What is the next n for which a(n) is prime?
LINKS
Paolo Xausa, Table of n, a(n) for n = 0..15
Grant Sanderson, How They Fool Ya (live) | Math parody of Hallelujah, 3Blue1Brown YouTube video, 2023.
FORMULA
EXAMPLE
5 --> 11 --> 23 ...
base 10 to base 4 base 10 to base 4
MATHEMATICA
NestList[FromDigits[IntegerDigits[#, 4]] &, 5, 11]
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Paolo Xausa, May 20 2024
STATUS
approved