Summing the N Largest Values in a Range

Problem:

Summing the n largest values in List1 (column A) for each value of N in column B.

Solution:

Use the SUM, LARGE, ROW, and INDIRECT functions as shown in the following Array formula:
{=SUM(LARGE($A$2:$A$11,ROW(INDIRECT(\"1:\"&B2))))}