Partial sums of A299287.

Terms

a(0) =1a(1) =11a(2) =44a(3) =116a(4) =242a(5) =438a(6) =719a(7) =1101a(8) =1599a(9) =2229a(10) =3006a(11) =3946a(12) =5064a(13) =6376a(14) =7897a(15) =9643a(16) =11629a(17) =13871a(18) =16384a(19) =19184a(20) =22286a(21) =25706a(22) =29459a(23) =33561a(24) =38027a(25) =42873a(26) =48114a(27) =53766a(28) =59844a(29) =66364