OFFSET
1,1
COMMENTS
It is conjectured that 160 is the only number to appear twice: 2+3+...+31=160 2^3+3^3+5^3=160
EXAMPLE
2^2+3^2=4+9=13 2+3+5=10 2^7=128 so these numbers are all present.
PROG
(PARI) v=vector(1000); vc=1; for (n=1, 100, p=primes(n); for (k=1, 10, s=0; for (c=1, n, s=s+p[c]^k); v[vc]=s; vc++; )); vecextract(vecsort(v), "1..100")
CROSSREFS
KEYWORD
nonn
AUTHOR
Jon Perry, Nov 10 2002
STATUS
approved