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Squares of even elements in Pascal's triangle A007318.
1

%I #15 Apr 18 2020 12:51:03

%S 4,16,36,16,100,100,36,400,36,64,784,3136,4900,3136,784,64,1296,7056,

%T 15876,15876,7056,1296,100,14400,44100,63504,44100,14400,100,108900,

%U 213444,213444,108900,144,4356,48400,627264,853776,627264,48400,4356

%N Squares of even elements in Pascal's triangle A007318.

%H Harvey P. Dale, <a href="/A014727/b014727.txt">Table of n, a(n) for n = 0..1000</a>

%F a(n) = A014428(n)^2. - _Sean A. Irvine_, Nov 18 2018

%t Select[Flatten[Table[Binomial[n,k],{n,0,20},{k,0,n}]],EvenQ]^2 (* _Harvey P. Dale_, Apr 18 2020 *)

%Y Cf. A007318, A014428.

%K nonn,tabf,easy

%O 0,1

%A _Mohammad K. Azarian_

%E More terms from Andrew J. Gacek (andrew(AT)dgi.net)