OFFSET
1,1
FORMULA
A000330(m)+2 gives primes.
EXAMPLE
821 = 2 + (1 + 4 + 9 + 16 + 25 + 36 + 49 + 64 + 81 + 100 + 121 + 144 + 169) = 2 + 919 = c + Sum[k^2;1...13]. Instead of c = 2 several other constants give numerous solutions.
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Oct 24 2001
STATUS
approved