a(n) = sum of the perimeters of the Ferrers boards of the partitions of n. Also, sum of the perimeters of the diagrams of the regions of the set of partitions of n.
A278355
a(n) = sum of the perimeters of the Ferrers boards of the partitions of n. Also, sum of the perimeters of the diagrams of the regions of the set of partitions of n.
Terms
- a(0) =0a(1) =4a(2) =12a(3) =24a(4) =48a(5) =80a(6) =140a(7) =216a(8) =344a(9) =512a(10) =768a(11) =1100a(12) =1596a(13) =2224a(14) =3120a(15) =4272a(16) =5852a(17) =7860a(18) =10576a(19) =13992a(20) =18520a(21) =24208a(22) =31596a(23) =40824a(24) =52696a(25) =67404a(26) =86088a(27) =109176a(28) =138180a(29) =173812
External references
- oeis: A278355