Partial sums of A049486.

Terms

a(0) =1a(1) =5a(2) =15a(3) =36a(4) =70a(5) =123a(6) =197a(7) =298a(8) =428a(9) =593a(10) =795a(11) =1040a(12) =1330a(13) =1671a(14) =2065a(15) =2518a(16) =3032a(17) =3613a(18) =4263a(19) =4988a(20) =5790a(21) =6675a(22) =7645a(23) =8706a(24) =9860a(25) =11113a(26) =12467a(27) =13928a(28) =15498a(29) =17183