Re: [PrimeNumbers] triangle, row sums = Sigma(n)
- --- matrixmonitor <matrixmonitor@...> wrote:
> 1,2,1,3,0,1,4,2,0,1,5,0,0,0,1,6,3,2,0,0,1,7,0,0,0,0,0,1,8,4,0,2,0,0,0,That much seems true.
> %T A126988
> %U A126988 3,0,2,0,0,0,0,0,0
> %N A126988 Triangle, row sums = Sigma(n).
> %C A126988 Row sums = A000203, (Sigma(n)): 1, 3, 4, 7, 6, 12, 8,What the blazes are 'parsed' terms?
> 15,... Sigma(n) is the sum of the divisors of the integer n.
> Conjecture: The sequence of parsed terms in Sigma(n) is the reversal
> of non-zero row terms in the triangle A126988.This sequence isn't the row sums of any triangle, it is a triangle.
> %D A126988 David Wells, "Prime Numbers, the Most Mysterious Figures
> in Math", John Wiley & Sons, Inc, 2005, Appendix B.
> %F A126988 Row sums of a triangle in which k-th column (k=0,1,2...)
> is (1,2,3,...) interspersed with n consecutive zeros, starting after
> the "1".
The descriptions are garbled, just as would be expected from:
> %A A126988 Gary W. Adamson (qntmpkt(AT)yahoo.com), Dec 31 2006So, matrixmonitor, I don't remember seeing you post before. You're not just
another sock-puppet for that previous known spewer of
/stuff-of-questionable-quality/ are you?
() ASCII ribbon campaign () Hopeless ribbon campaign
/\ against HTML mail /\ against gratuitous bloodshed
[stolen with permission from Daniel B. Cristofani]
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around