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 A047985 #16 Jun 06 2020 04:11:21 %S A047985 19,29,38,43,53,58,67,76,86,87,89,101,103,106,116,134,137,139,149,151, %T A047985 152,157,163,172,174,178,197,202,203,206,211,212,227,229,232,233,247, %U A047985 261,267,268,269,271,274,277,278,283,293,298,302,303,304,307 %N A047985 Integers n such that A047988(n)=2. %H A047985 David A. Corneth, <a href="/A047985/b047985.txt">Table of n, a(n) for n = 1..10000</a> %H A047985 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. %e A047985 19 has value 2 since by adding 1 we reach 20 which has value 1; there is no cheaper way to reach 2. %Y A047985 Cf. A047836, A047984, A047986, A047987, A047988. %K A047985 nonn %O A047985 1,1 %A A047985 Thomas Kantke (bytes.more(AT)ibm.net) %E A047985 More terms from _David W. Wilson_