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 A163670 #4 Mar 30 2012 18:40:50 %S A163670 5,9,10,11,12,15,19,20,25,29,50,55,59,90,95,99 %N A163670 Numbers whose English name (excluding spaces and hyphens) is written with only straight line segments (chisel strokes). %C A163670 There are no elements in the sequence beyond 99 because of curves in writing hUnDReD, thOUSanD, milliOn, BilliOn, and so forth. If one counts the segments (chisel strokes) then 29 is the unique fixed point of that derived sequence. %C A163670 Specifically, these are the numbers whose names use only the letters A, E, F, H, I, K, L, M, N, T, V, W, X, Y, and Z. [From _Franklin T. Adams-Watters_, Aug 06 2009] %e A163670 a(1) = 5 because FIVE is the smallest integer whose English name is written with only straight line segments. 6 is not in the sequence because the letter S has curves. a(2) = 9 because NINE is the next integer whose English name is written with only straight line segments. %Y A163670 Cf. A002963, A005589. %K A163670 easy,fini,full,nonn,word %O A163670 1,1 %A A163670 _Jonathan Vos Post_, Aug 02 2009 %E A163670 Missing 55 and 95 added by _Franklin T. Adams-Watters_, Aug 06 2009 %E A163670 Slightly edited by _Charles R Greathouse IV_, Oct 05 2009