The PD_t(n) function (Number of tagged parts over all the partitions of n with designated summands).

A293421

The PD_t(n) function (Number of tagged parts over all the partitions of n with designated summands).

Terms

    a(0) =1a(1) =3a(2) =6a(3) =13a(4) =24a(5) =45a(6) =77a(7) =132a(8) =213a(9) =346a(10) =537a(11) =834a(12) =1257a(13) =1893a(14) =2778a(15) =4077a(16) =5865a(17) =8421a(18) =11903a(19) =16785a(20) =23364a(21) =32444a(22) =44562a(23) =61041a(24) =82859a(25) =112164a(26) =150639a(27) =201768a(28) =268413a(29) =356100

External references