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18 votes
25 answers
2k views

Harmonic divisor numbers

29 votes
37 answers
4k views

Euro coins and notes

12 votes
20 answers
3k views

Infinite Candle Sequence

20 votes
21 answers
1k views

Rabinowitz-Wagon \$\pi\$ formula

45 votes
72 answers
5k views

Fibonacci-orial

27 votes
46 answers
4k views

Draw some expanding arrows

38 votes
53 answers
6k views

Print all lexicographically increasing numbers under 10000

49 votes
124 answers
8k views

Concatenating n with n + 1

7 votes
28 answers
2k views

Enterprise Quality Code Prime Sieve

36 votes
36 answers
3k views

Say What You See

55 votes
47 answers
4k views

Last odd digit of power of 2

20 votes
11 answers
1k views

Spiral Permutation Sequence

16 votes
16 answers
2k views

Compute the Wilson numbers

21 votes
17 answers
1k views

A yet-unlisted sequence

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