Main diagonal of A332361.

Terms

a(0) =3a(1) =6a(2) =14a(3) =36a(4) =76a(5) =160a(6) =276a(7) =478a(8) =756a(9) =1164a(10) =1660a(11) =2374a(12) =3244a(13) =4430a(14) =5800a(15) =7490a(16) =9468a(17) =11982a(18) =14792a(19) =18276a(20) =22216a(21) =26816a(22) =31848a(23) =37862a(24) =44500a(25) =52214a(26) =60544a(27) =70012a(28) =80348a(29) =92264