OFFSET
1,3
COMMENTS
The first two terms are zero because the first two terms of the EKG sequence are given. The growth rate is approximately quadratic. An almost linear-time algorithm is described in the Lagarias-Rains-Sloane paper.
LINKS
T. D. Noe, Table of n, a(n) for n=1..1000
J. C. Lagarias, E. M. Rains and N. J. A. Sloane, The EKG Sequence
FORMULA
a(n) = sum_{k=1..n} A178760(k)
CROSSREFS
KEYWORD
nonn
AUTHOR
T. D. Noe, Jun 10 2010
STATUS
approved