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a(n) = least k such that A048821(k) = n.
4

%I #15 Apr 18 2019 17:36:25

%S 0,1,5,10,17,116,138,165,1228,1837,1573,1256

%N a(n) = least k such that A048821(k) = n.

%C a(14) = 3503.

%D Steven R. Finch, Mathematical Constants, Cambridge, 2003, pp. 441-443.

%H Steven R. Finch, <a href="http://www.people.fas.harvard.edu/~sfinch/constant/cntfrc/mnkwsk.html">Minkowski's Question Mark Function</a> [Broken link]

%H Steven R. Finch, <a href="http://web.archive.org/web/20010208143502/http://www.mathsoft.com/asolve/constant/cntfrc/mnkwsk.html">Minkowski's Question Mark Function</a> [From the Wayback machine]

%H <a href="/index/Me#MinkowskiQ">Index entries for Minkowski's question mark function</a>

%H <a href="/index/Me#MinkowskiQ">Index entries for sequences related to Minkowski's question mark function</a>

%Y Cf. A048817-A048821.

%K nonn,hard

%O 1,3

%A _Christian G. Bower_, Apr 15 1999