A014727 Squares of even elements in Pascal's triangle A007318.
4, 16, 36, 16, 100, 100, 36, 400, 36, 64, 784, 3136, 4900, 3136, 784, 64, 1296, 7056, 15876, 15876, 7056, 1296, 100, 14400, 44100, 63504, 44100, 14400, 100, 108900, 213444, 213444, 108900, 144, 4356, 48400, 627264, 853776, 627264, 48400, 4356
Offset: 0
Links
- Harvey P. Dale, Table of n, a(n) for n = 0..1000
Programs
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Mathematica
Select[Flatten[Table[Binomial[n,k],{n,0,20},{k,0,n}]],EvenQ]^2 (* Harvey P. Dale, Apr 18 2020 *)
Formula
a(n) = A014428(n)^2. - Sean A. Irvine, Nov 18 2018
Extensions
More terms from Andrew J. Gacek (andrew(AT)dgi.net)