Partial sums of A301726.

Terms

a(0) =1a(1) =6a(2) =17a(3) =33a(4) =54a(5) =81a(6) =114a(7) =152a(8) =195a(9) =244a(10) =298a(11) =357a(12) =422a(13) =492a(14) =567a(15) =648a(16) =735a(17) =827a(18) =924a(19) =1027a(20) =1135a(21) =1248a(22) =1367a(23) =1491a(24) =1620a(25) =1755a(26) =1896a(27) =2042a(28) =2193a(29) =2350