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.
%I A047986 #15 Jun 06 2020 04:11:53 %S A047986 173,347,823,907,1237,1697,2137,2333,2423,2473,2767,2777,3253,3413, %T A047986 3547,3559,3623,3767,4243,4273,4457,4547,4723,5091,5297,5861,6185, %U A047986 6197,6593,6823,6827,6871,7093,7247,7537,7717,7817,7823,7879,8243 %N A047986 Integers n such that A047988(n)=3. %H A047986 David A. Corneth, <a href="/A047986/b047986.txt">Table of n, a(n) for n = 1..10000</a> %H A047986 Thomas Kantke, <a href="https://www.spektrum.de/magazin/das-spiel-minimum-und-die-zerlegung-natuerlicher-zahlen/820793">Das Spiel Minimum und die Zerlegung natürlicher Zahlen</a>, Mathematische Unterhaltungen, Spectrum der Wissenschaft, April 1993, pp. 11-13. %Y A047986 Cf. A047836, A047985, A047986, A047987, A047988. %K A047986 nonn %O A047986 1,1 %A A047986 Thomas Kantke (bytes.more(AT)ibm.net) %E A047986 More terms from _David W. Wilson_