Timeline for Help with a double sum, please
Current License: CC BY-SA 2.5
3 events
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| Jan 24, 2010 at 9:50 | comment | added | Douglas Zare | I tried replacing (-1)^k by x^k, and looked at the resulting polynomials. The first few factored with a (1+x) term times an irreducible term with no obviously helpful pattern. Clearing denominators didn't turn up anything in the OEIS. | |
| Jan 24, 2010 at 6:27 | comment | added | Quadrescence | One idea I was thinking was to split the sum into positive and negative pieces with the $(-1)^k$ and prove the resulting sums are equal. Though I didn't have much luck with the approach. | |
| Jan 24, 2010 at 5:58 | history | answered | aorq | CC BY-SA 2.5 |