This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
no. of n a(n) prime factorization divisors -- ---------- --------------------------------- -------- 1 1 - 1 2 3 3 2 3 9 3^2 3 4 33 3 * 11 4 5 99 3^2 * 11 6 6 525 3 * 5^2 * 7 12 7 3003 3 * 7 * 11 * 13 16 8 5445 3^2 * 5 * 11^2 18 9 5775 3 * 5^2 * 7 * 11 24 10 50505 3 * 5 * 7 * 13 * 37 32 11 53235 3^2 * 5 * 7 * 13^2 36 12 171171 3^2 * 7 * 11 * 13 * 19 48 13 525525 3 * 5^2 * 7^2 * 11 * 13 72 14 5073705 3^3 * 5 * 7^2 * 13 * 59 96 15 18999981 3^3 * 7 * 11 * 13 * 19 * 37 128 16 50555505 3 * 5 * 7^2 * 11 * 13^2 * 37 144 17 51666615 3^2 * 5 * 7 * 11 * 13 * 31 * 37 192 18 512272215 3^3 * 5 * 7^3 * 13 * 23 * 37 256 19 513828315 3^2 * 5 * 7 * 11^2 * 13 * 17 * 61 288 20 5026226205 3 * 5 * 7^2 * 11 * 13 * 17 * 29 * 97 384
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