A026156 - OEIS

%I #7 Sep 18 2019 20:01:27

%S 1,4,20,111,616,3464,19656,112370,646272,3735324,21678696,126256361,

%T 737513400,4319243760,25352692620,149108262264,878502339712,

%U 5184007871160,30633757767144,181253849830625,1073680925191128,6366778606697544,37790436148353900,224505805610383128

%N a(n) = T(2n-1,n), where T is the array in A026148.

%K nonn

%O 1,2

%A _Clark Kimberling_

%E Offset corrected and more terms from _Sean A. Irvine_, Sep 18 2019