OFFSET
1,3
COMMENTS
Partials sums of number of singular n X n rational (0,1)-matrices. The subsequence of primes in this partial sum begins: 431.
FORMULA
a(n) = SUM[i=0..n] A000410(i).
EXAMPLE
a(8) = 0 + 0 + 6 + 425 + 65625 + 27894671 + 35716401889 + 144866174953833.
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Jonathan Vos Post, Feb 23 2010
STATUS
approved