a(n) = n*p(n)-spt(n) (= n*A000041(n) - A092269(n)).

Terms

a(0) =0a(1) =1a(2) =4a(3) =10a(4) =21a(5) =40a(6) =70a(7) =119a(8) =190a(9) =301a(10) =455a(11) =686a(12) =998a(13) =1450a(14) =2051a(15) =2895a(16) =4001a(17) =5523a(18) =7490a(19) =10141a(20) =13545a(21) =18046a(22) =23773a(23) =31255a(24) =40687a(25) =52850a(26) =68105a(27) =87542a(28) =111755a(29) =142347