Number of + signs needed to write the partitions of n (A000041) as sums.

Terms

a(0) =0a(1) =0a(2) =1a(3) =3a(4) =7a(5) =13a(6) =24a(7) =39a(8) =64a(9) =98a(10) =150a(11) =219a(12) =322a(13) =455a(14) =645a(15) =892a(16) =1232a(17) =1668a(18) =2259a(19) =3008a(20) =4003a(21) =5260a(22) =6897a(23) =8951a(24) =11599a(25) =14893a(26) =19086a(27) =24284a(28) =30827a(29) =38888