Total number of blocks in all partitions of [n] where each block has at least one odd element and at least one even element.
A363472
Total number of blocks in all partitions of [n] where each block has at least one odd element and at least one even element.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =5a(5) =13a(6) =55a(7) =193a(8) =941a(9) =4081a(10) =22351a(11) =113761a(12) =694565a(13) =4030153a(14) =27107095a(15) =175738753a(16) =1289775821a(17) =9209233921a(18) =73147903471a(19) =568928274961
External references
- oeis: A363472