a(n) = Sum_{p in P} (H(2,p)^2)/2, where P is the set of partitions of n, and H(2,p) is the number of hooks of length 2 in p.
A302348
a(n) = Sum_{p in P} (H(2,p)^2)/2, where P is the set of partitions of n, and H(2,p) is the number of hooks of length 2 in p.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =4a(5) =5a(6) =14a(7) =18a(8) =37a(9) =50a(10) =90a(11) =122a(12) =199a(13) =270a(14) =415a(15) =559a(16) =820a(17) =1096a(18) =1556a(19) =2060a(20) =2847a(21) =3736a(22) =5057a(23) =6576a(24) =8747a(25) =11279a(26) =14788a(27) =18916a(28) =24493a(29) =31097
External references
- oeis: A302348