101774
domain: N
Appears in sequences
- Positive numbers k such that k and 7*k are anagrams in base 9 (written in base 9).at n=4A023084
- Triangle read by rows: T(n,k) is the number of partitions of the set {1,2,...,n} having exactly k blocks that contain both odd and even entries (0<=k<=floor(n/2)).at n=37A124418
- Triangle, read by rows, where T(n,k) = A049020([n/2],k)*A049020([(n+1)/2],k).at n=37A124526