OFFSET
1,3
COMMENTS
a(9) has 93 digits and thus is too long to be added. - Giovanni Resta, Mar 22 2013
EXAMPLE
a(3) = (1)^3 + (1)^3 - (1-1)^3 = 2.
a(4) = (2)^3 + (1)^3 - (2 - 1)^3 = 8.
a(5) = (8)^3 + (2)^3 - (8 - 2)^3 = 512 + 8 - 216 = 304.
CROSSREFS
KEYWORD
nonn
AUTHOR
Gregory Gabovich, Mar 21 2013
EXTENSIONS
a(8) from Giovanni Resta, Mar 22 2013
STATUS
approved