Partial sums of A304076.

Terms

a(0) =1a(1) =3a(2) =7a(3) =15a(4) =31a(5) =55a(6) =94a(7) =138a(8) =199a(9) =271a(10) =369a(11) =457a(12) =567a(13) =667a(14) =803a(15) =939a(16) =1126a(17) =1314a(18) =1548a(19) =1732a(20) =1943a(21) =2099a(22) =2307a(23) =2511a(24) =2790a(25) =3062a(26) =3399a(27) =3691a(28) =4049a(29) =4341