a(n) = [ Sum of squares of 1 + 1/2 + ... + 1/k ], k = 1,2,...,n.

Terms

a(0) =1a(1) =3a(2) =6a(3) =10a(4) =16a(5) =22a(6) =28a(7) =36a(8) =44a(9) =52a(10) =61a(11) =71a(12) =81a(13) =92a(14) =103a(15) =114a(16) =126a(17) =138a(18) =151a(19) =164a(20) =177a(21) =191a(22) =205a(23) =219a(24) =233a(25) =248a(26) =263a(27) =279a(28) =295a(29) =311