Sum of the divisors of A000073(n) (tribonacci numbers).

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =8a(5) =14a(6) =60a(7) =84a(8) =121a(9) =150a(10) =414a(11) =1560a(12) =1352a(13) =2304a(14) =7239a(15) =12480a(16) =10713a(17) =22400a(18) =67032a(19) =154056a(20) =166560a(21) =334880a(22) =770160a(23) =1322090a(24) =2020564a(25) =3712800a(26) =8461404a(27) =21427200a(28) =17008752a(29) =37733696