Sum of squares of Bell numbers (A000110).
A217143
Sum of squares of Bell numbers (A000110).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =31a(4) =256a(5) =2960a(6) =44169a(7) =813298a(8) =17952898a(9) =465148507a(10) =13915349132a(11) =474372594032
External references
- oeis: A217143