786437

Appears in sequences

• Number of n X 2 binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two no more than once.at n=15A268775
• a(n) is that generation of the rule-30 1D cellular automaton started from a single ON cell in which n successive OFF cells appears for the first time after a(n-1).at n=39A319606
• a(n) = 3*2^n + 5*(-1)^n.at n=18A369404