a(n) = RMS( A141393(0) through A141393(n) ).

Terms

a(0) =1a(1) =5a(2) =15a(3) =21a(4) =42a(5) =126a(6) =210a(7) =330a(8) =495a(9) =715a(10) =1001a(11) =1295a(12) =5180a(13) =7252a(14) =9028a(15) =11356a(16) =14195a(17) =17535a(18) =22211a(19) =26887a(20) =45241a(21) =109871a(22) =2087549a(23) =3186259a(24) =5326355a(25) =7832875a(26) =164490375a(27) =308102375a(28) =403718875a(29) =634415375