Partial sums of the partition numbers A000041 of the positive integers.

Terms

a(0) =1a(1) =3a(2) =6a(3) =11a(4) =18a(5) =29a(6) =44a(7) =66a(8) =96a(9) =138a(10) =194a(11) =271a(12) =372a(13) =507a(14) =683a(15) =914a(16) =1211a(17) =1596a(18) =2086a(19) =2713a(20) =3505a(21) =4507a(22) =5762a(23) =7337a(24) =9295a(25) =11731a(26) =14741a(27) =18459a(28) =23024a(29) =28628