a(n) is the total surface area of a hollow cubic block (defined as a block with a shell thickness of 1 cube) where n is the edge length of the removed volume.
A309842
a(n) is the total surface area of a hollow cubic block (defined as a block with a shell thickness of 1 cube) where n is the edge length of the removed volume.
Terms
- a(0) =60a(1) =120a(2) =204a(3) =312a(4) =444a(5) =600a(6) =780a(7) =984a(8) =1212a(9) =1464a(10) =1740a(11) =2040a(12) =2364a(13) =2712a(14) =3084a(15) =3480a(16) =3900a(17) =4344a(18) =4812a(19) =5304a(20) =5820a(21) =6360a(22) =6924a(23) =7512a(24) =8124a(25) =8760a(26) =9420a(27) =10104a(28) =10812a(29) =11544
External references
- oeis: A309842