93456
domain: N
Appears in sequences
- Coordination sequence for D_4 lattice.at n=18A007900
- Numbers k such that 205*2^k+1 is prime.at n=20A032479
- Slowest increasing sequence with its first 10 digits all different one from another, then the next 10, then the next 10, etc.at n=36A106604
- Kekulé numbers for certain benzenoids.at n=7A110690
- a(n) = 4*n*(floor(n^2/2)+1). For n >= 3, this is the number of directed Hamiltonian paths on the n-prism graph.at n=36A124350
- Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives x numbers.at n=20A125490
- Number of (directed) Hamiltonian paths in the n-Möbius ladder graph.at n=33A137883
- Lexicographically first sequence of distinct terms such that any set of seven successive digits can be reordered as {d, d+1, d+2, d+3, d+4, d+5, d+6}, d being the smallest of the seven digits.at n=55A302502
- Triangle read by rows: T(n,k) is the number of derangements in S_n with no k-cycles. 1 <= k <= n.at n=38A378495