OFFSET
1,1
LINKS
Robert Israel, Table of n, a(n) for n = 1..90
EXAMPLE
a(1) = 5 = 1^1 + 2^2 is prime.
a(2) = 31 = 2^2 + 3^3 is prime.
a(3) = 283 = 3^3 + 4^4 is prime.
a(4) = 3413 = 1^1 + 2^2 + 3^3 + 4^4 + 5^5 is prime.
a(5) = 50069 = 1^1 + 2^2 + 3^3 + 4^4 + 5^5 + 6^6 is prime.
a(6) = 17650823 = 3^3 + 4^4 + 5^5 + 6^6 + 7^7 + 8^8 is prime.
MAPLE
B:= [0, seq(i^i, i=1..100)]:
S:= ListTools:-PartialSums(B):
R:=select(t -> t < 101^101 and isprime(t), {seq(seq(S[i]-S[j], j=1..i-1), i=2..101)}):
sort(convert(R, list));
CROSSREFS
KEYWORD
nonn
AUTHOR
J. M. Bergot and Robert Israel, Jan 05 2021
STATUS
approved