Encoded symmetrical antidiagonal square binary matrices with either 1 or 2 ones.
A261819
Encoded symmetrical antidiagonal square binary matrices with either 1 or 2 ones.
Terms
- a(0) =1a(1) =6a(2) =16a(3) =40a(4) =384a(5) =576a(6) =4096a(7) =10240a(8) =17408a(9) =393216a(10) =589824a(11) =1081344a(12) =16777216a(13) =41943040a(14) =71303168a(15) =136314880a(16) =6442450944a(17) =9663676416a(18) =17716740096a(19) =34628173824
External references
- oeis: A261819