46476

Appears in sequences

• Number of polyaboloes (or polytans): number of different shapes that can be formed with n congruent isosceles right triangles, identifying mirror images.at n=10A006074
• Number of ordered rooted trees with n non-root nodes and all outdegrees <= four.at n=11A036766
• Numbers k such that phi(sigma(k)) + sigma(phi(k)) = 2k.at n=11A066950
• Number of binary words of length n containing at least one subword 1001 and no subwords 10^{i}1 with i<2.at n=28A143282
• Number A(n,k) of 3n-length k-ary words that can be built by repeatedly inserting triples of identical letters into the initially empty word; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=59A213028
• Number of endofunctions on [n] such that no element has a preimage of cardinality five.at n=6A245409
• A005117(k) - 1 where k is the least k such that A389412(k) = n.at n=31A389879