OFFSET
1,1
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..1000
Olivier Rozier, Ramanujan's tau function
EXAMPLE
a(2) = (1/2) * (32768 + 2*16807 + 2*512) = 33703.
tau(2) = 33703 - 33727 = -24.
a(3) = (1/2) * (331776 + 2*161051 + 2*32768 + 2*81) = 359788.
tau(3) = 359788 - 359536 = 252.
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Dec 26 2017
STATUS
approved