Number of partitions of an n-set with an odd number of blocks of size 1.
A111723
Number of partitions of an n-set with an odd number of blocks of size 1.
Terms
- a(0) =1a(1) =0a(2) =4a(3) =4a(4) =31a(5) =86a(6) =449a(7) =1968a(8) =10420a(9) =56582a(10) =333235a(11) =2069772a(12) =13606113a(13) =94065232a(14) =682242552a(15) =5175100432a(16) =40954340995a(17) =337362555010
External references
- oeis: A111723