OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..334
R. H. Hardin & Max Alekseyev, 2X2 -n..n with inverse in -n..n and totient function?, Seqfan list Feb 2012.
FORMULA
a(n) = a(n-1) + 8*A000010(n).
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin with Max Alekseyev, Feb 05 2012
STATUS
approved