Partial sums of A294629.

Terms

a(0) =4a(1) =20a(2) =48a(3) =104a(4) =172a(5) =292a(6) =424a(7) =616a(8) =844a(9) =1140a(10) =1448a(11) =1888a(12) =2340a(13) =2876a(14) =3488a(15) =4224a(16) =4972a(17) =5892a(18) =6824a(19) =7936a(20) =9140a(21) =10460a(22) =11792a(23) =13416a(24) =15092a(25) =16900a(26) =18816a(27) =20960a(28) =23116a(29) =25612