Download OEIS B files

oeis-bfiles-dl.sh

#!/bin/bash
# pass number of threads as $1
# runs prefix3-dl.sh with several prefixes simultaneously
seq -f '%03g' 0 999 | xargs -I {} -n 1 -P $1 ./prefix3-dl.sh {}
# as of writing this, the 999 can be changed to 342
# that will increase over time as more sequences are added

prefix3-dl.sh

#!/bin/bash
# helper bash script to download some of the files based on first 3 digits
# pass 3 digits for $1 (000 through 999)
# all sequences whose number starts with $1 go in their own folder
echo $1
mkdir $1
for n in $(seq -f '%03g' 0 999)
do
    # only download missing files so script can be interrupted
    # this breaks if interrupted in the middle of a wget download however
    if [ ! -f ./$1/b$1$n.txt ]
    then
        wget -c https://oeis.org/A$1$n/b$1$n.txt
        mv ./b$1$n.txt ./$1/
    fi
done