167491

Properties

Appears in sequences

• Numbers k such that k^2 + 1 is a palindrome.at n=15A027719
• Expansion of e.g.f.: (1-x)/(2-exp(x)).at n=8A053525
• Primes of the form (p^2+2)/33 (with p prime).at n=24A165673
• Primes of the form 2*n^2 + 34*n + 15.at n=23A217494
• a(n) is the number of time-dependent assembly trees satisfying the connected gluing rule for a cycle on n vertices.at n=7A317057
• Triangle read by rows. T(n,k) is the number of labeled threshold graphs on n vertices with k components, for 1 <= k <= n.at n=28A348436
• Prime numbersat n=15302