Total sum of squares of number of distinct parts in all partitions of n.

Terms

a(0) =1a(1) =2a(2) =6a(3) =11a(4) =22a(5) =37a(6) =64a(7) =101a(8) =161a(9) =243a(10) =367a(11) =535a(12) =778a(13) =1103a(14) =1558a(15) =2160a(16) =2981a(17) =4056a(18) =5493a(19) =7355a(20) =9804a(21) =12948a(22) =17026a(23) =22217a(24) =28872a(25) =37276a(26) =47942a(27) =61314a(28) =78134a(29) =99081