older archived version: 
I am a control systems engineer living in Virginia, USA.
I am revamping this page. Below are/will be images of relevant edits.--Bill McEachen 15:02, 26 April 2017 (UTC)
In the following areas (author/comment/formula) my counts as of Nov 2020 are ~ 41, 44 and 6.
This sequence has relationship to A001122. I checked a few locations in the sequence, to check if some constant akin to Artin's seemed to hold. It does, perhaps ~ 0.267+.
I am unsure if this is some already established constant. Here is a log-log scatter plot for A269844 vs A001122.--Bill McEachen 01:44, 25 January 2018 (UTC)
Program languages seen in OEIS
I was just curious and used "program:xxx" to try to get approximate counts. What I found ~ June 2017 (note this excludes Mathematica and Maple):
- Pari ~ 60K
- Magma ~ 21500
- Haskell ~ 8125
- Sage 4161
- Maxima 2270
- MatLab 176
- Ruby 165
- Basic 143
- MuPad 120
- Fortran <100 (no sequences after 140xxx)
- R unknown
- C++ unknown