Number of 7's in all the partitions of n into distinct parts.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =1a(8) =1a(9) =2a(10) =2a(11) =3a(12) =4a(13) =4a(14) =5a(15) =7a(16) =8a(17) =10a(18) =12a(19) =14a(20) =18a(21) =22a(22) =25a(23) =30a(24) =36a(25) =42a(26) =50a(27) =58a(28) =67a(29) =79