In the infinite series 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 5... each positive integer k appears k times in consecutive order.
Write a formula for the sum of the first n terms of the series.
(In reply to
re: A formula by Mindrod)
Mindrod,
The sum of zero terms are not properly presented if the summation of terms were 1 to k.
The sum of the first zero terms of the series is:
Sigma [i=0 to 0] FLOOR(1/2 + SQRT(2*0)) = 0 (zero)

Posted by Dej Mar
on 20070514 22:28:57 