Sum of the 2nd smallest parts of all the partitions of n (2nd smallest part is defined to be 0 when the partition does not have at least 2 distinct parts).
A265248
Sum of the 2nd smallest parts of all the partitions of n (2nd smallest part is defined to be 0 when the partition does not have at least 2 distinct parts).
Terms
- a(0) =0a(1) =0a(2) =2a(3) =5a(4) =14a(5) =22a(6) =43a(7) =63a(8) =97a(9) =140a(10) =201a(11) =266a(12) =371a(13) =492a(14) =638a(15) =837a(16) =1079a(17) =1377a(18) =1748a(19) =2207a(20) =2756a(21) =3471a(22) =4287a(23) =5317a(24) =6537a(25) =8081a(26) =9840a(27) =12069a(28) =14643a(29) =17837
External references
- oeis: A265248