Graphillion: Kazoeage Oneesan wo Sukue
English name: Don't Count Naively
Type: ONA, Episodes: 1
Aired: Jun 17, 2013
Source: Unknown
Rating: G - All Ages
Synopsis:
A direct sequel to Fukashigi no Kazoekata commissioned by Graphillion. Graphillion is a Python software package on search, optimization, and enumeration for a very large set of graphs. This video is a quick tutorial to learn what Graphillion is.

(Source: Official YouTube Page)