login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A078428 Partial sums of A035187. 2
1, 1, 1, 2, 3, 3, 3, 3, 4, 4, 6, 6, 6, 6, 6, 7, 7, 7, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 13, 13, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 18, 18, 18, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 24, 24, 24, 24, 26, 26, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 31, 31, 31, 31, 31, 33 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..75.

M. Baake, Algebra, Combinatorics and Number Theory

M. Baake and R. V. Moody, Similarity submodules and root systems in four dimensions, arXiv:math/9904028 [math.MG], 1999; Canad. J. Math. 51 (1999), 1258-1276.

FORMULA

a(n) = Sum_{k=1..n} A035187(k).

a(n) is asymptotic to c*n where c=2*log(tau)/sqrt(5) and tau=(1+sqrt(5))/2

MATHEMATICA

Array[DivisorSum[#, KroneckerSymbol[5, #]&]&, 76] // Accumulate (* Jean-Fran├žois Alcover, Dec 13 2018 *)

CROSSREFS

Sequence in context: A194819 A194235 A029120 * A337634 A316355 A055768

Adjacent sequences:  A078425 A078426 A078427 * A078429 A078430 A078431

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Dec 29 2002

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 28 11:24 EDT 2022. Contains 357070 sequences. (Running on oeis4.)