Total sum of parts of multiplicity 3 in all partitions of n.

Terms

a(0) =1a(1) =0a(2) =1a(3) =3a(4) =4a(5) =4a(6) =11a(7) =13a(8) =21a(9) =30a(10) =44a(11) =59a(12) =92a(13) =115a(14) =165a(15) =225a(16) =305a(17) =394a(18) =546a(19) =700a(20) =931a(21) =1204a(22) =1572a(23) =2005a(24) =2613a(25) =3290a(26) =4218a(27) =5328a(28) =6745a(29) =8423