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Look and Say


The Look and Say sequence starts with 1 and is continued by looking at each of the runs of the same number in the previous element and combining the length with the original number. For example the next element after 111221 would be 312211 (three ones, two twos and one one).

Print the first 20 elements of the Look and Say sequence.

Compiled from AT&T syntax to x86-64 Linux. Use syscalls to write output.
Top-level programs are supported, args holds ARGV.
ARGV is available via STDIN, joined on NULL. x is a no-op.
ARGV is available via STDIN, joined on NULL.
arguments holds ARGV, print() to output with a newline, write() to output without a newline.
say() is available without any import.
$args to access the arguments.
SELECT arg FROM argv to access the arguments, only the first column of the first result set will be printed, NULL values will be skipped, and the dialect is SQLite.
ctrl + enter or Run