Number of partitions of n-set in which number of blocks of size 2k-1 is odd (or zero) for every k.
A130223
Number of partitions of n-set in which number of blocks of size 2k-1 is odd (or zero) for every k.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =5a(4) =8a(5) =42a(6) =117a(7) =541a(8) =2403a(9) =10485a(10) =65778a(11) =282262a(12) =2284493a(13) =9977853a(14) =97315935a(15) =450358629a(16) =4966934284a(17) =25167390922a(18) =298399576813
External references
- oeis: A130223