21798
domain: N
Appears in sequences
- Numbers k such that k and 4*k are anagrams.at n=16A023088
- Number of n-node planar graphs with even degrees.at n=10A049339
- Increasing partial quotients of the continued fraction for agm(1,i)/(1+i).at n=13A076392
- a(n) = 9*a(n-1) - 9*a(n-2) + a(n-3).at n=5A095003
- Number of partitions of n such that (greatest part) - (least part) > number of parts.at n=41A237833
- Array read by antidiagonals: T(n,k) is the number of series-reduced rooted trees with n leaves of k colors.at n=49A319254