Construct a hollow square of 1's of side n and fill its interior with 0's to create a stack of n binary numbers. Express the sum of the stack in decimal.
A269059
Construct a hollow square of 1's of side n and fill its interior with 0's to create a stack of n binary numbers. Express the sum of the stack in decimal.
Terms
- a(0) =1a(1) =6a(2) =19a(3) =48a(4) =113a(5) =258a(6) =579a(7) =1284a(8) =2821a(9) =6150a(10) =13319a(11) =28680a(12) =61449a(13) =131082a(14) =278539a(15) =589836a(16) =1245197a(17) =2621454a(18) =5505039a(19) =11534352a(20) =24117265a(21) =50331666a(22) =104857619a(23) =218103828a(24) =452984853a(25) =939524118a(26) =1946157079a(27) =4026531864a(28) =8321499161a(29) =17179869210
External references
- oeis: A269059