sos: Precomputed Sum of Squared Data

In exams.forge: Support for Compiling Examination Tasks using the 'exams' Package

Precomputed Sum of Squared Data

Description

Five data matrices with precomputed results from sumofsquares(n, 10, zerosum=TRUE, maxt=Inf) for n=100, n=200, n=400,n=800, and n=1000.

Usage

data(sos100)
data(sos200)
data(sos400)
data(sos800)
data(sos1000)

sos200

sos400

sos800

sos1000

Format

For each line of a matrix it holds \sum_{i=1}^k x_i^2=n and \sum_{i=1}^k x_i=0. It contains all integer solutions up to k<=10. NA means that this entry is not used.

Examples

data(sos100)
head(sos100)
rowSums(sos100^2, na.rm=TRUE)
rowSums(sos100, na.rm=TRUE)

exams.forge documentation built on Aug. 21, 2025, 5:41 p.m.