a(n) is the sum of the numbers inside a square of side length 2n+1 located in Pascal's triangle at and below row n.
A369335
a(n) is the sum of the numbers inside a square of side length 2n+1 located in Pascal's triangle at and below row n.
Terms
- a(0) =1a(1) =10a(2) =94a(3) =816a(4) =6872a(5) =57038a(6) =469238a(7) =3836430a(8) =31221874a(9) =253198806a(10) =2047761014a(11) =16526046182a(12) =133145419056
External references
- oeis: A369335