OFFSET
1,1
COMMENTS
Squares in this partial sum begin: 2209 = 47^2. Primes in this partial sum begin: 3, 23, 151, 379, 431, 701.
EXAMPLE
a(19) = 3 + 5 + 15 + 7 + 21 + 35 + 9 + 45 + 11 + 63 + 33 + 55 + 77 + 13 + 39 + 65 + 99 + 91 + 15 = 701.
CROSSREFS
KEYWORD
nonn,less
AUTHOR
Jonathan Vos Post, Sep 12 2010
STATUS
approved