login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A178761 Cumulative number of tests performed to find the n-th term of the EKG sequence A064413. 2
0, 0, 2, 5, 6, 10, 16, 19, 22, 23, 28, 35, 39, 40, 47, 56, 59, 64, 69, 70, 83, 90, 99, 104, 115, 121, 126, 127, 138, 146, 152, 158, 159, 177, 186, 192, 193, 213, 222, 227, 234, 241, 242, 268, 275, 283, 291, 300, 310, 317, 331, 342, 350, 363, 379, 387, 388, 418 (list; graph; refs; listen; history; text; internal format)
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

Sequence in context: A316946 A005984 A172186 * A274037 A227975 A123645

Adjacent sequences:  A178758 A178759 A178760 * A178762 A178763 A178764

KEYWORD

nonn

AUTHOR

T. D. Noe, Jun 10 2010

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)