Partial sums of number of overpartitions (A015128).

Terms

a(0) =1a(1) =3a(2) =7a(3) =15a(4) =29a(5) =53a(6) =93a(7) =157a(8) =257a(9) =411a(10) =643a(11) =987a(12) =1491a(13) =2219a(14) =3259a(15) =4731a(16) =6793a(17) =9657a(18) =13605a(19) =19005a(20) =26341a(21) =36245a(22) =49533a(23) =67261a(24) =90789a(25) =121855a(26) =162679a(27) =216087a(28) =285655a(29) =375903