OCA:Conway++

Conway++
x=64, y = 64, rule = B3/S234c ! #C [[ THEME Inverse ]] #C [[ RANDOMIZE2 RANDSEED 1729 THUMBLAUNCH THUMBNAIL THUMBSIZE 2 GRID ZOOM 6 WIDTH 600 HEIGHT 600 LABEL 90 -20 2 "#G" AUTOSTART PAUSE 2 GPS 8 LOOP 256 ]] LifeViewer-generated pseudorandom soup
Rulestring	234c/3 B3/S234c
Character	Chaotic
Black/white reversal	B01234-c78/S01234678

Conway++ is an isotropic non-totalistic cellular automaton. In this rule, a cell survives from one generation to the next when it has 2 neibourhoods, 3 neibourhoods or 4 diagonal neighbors, and a new cell is born when it has 3 neighbours.

It is one of MCell built-in Weighted Life rules.