18085

Appears in sequences

• Symmetries in unrooted 4-trees on n+1 vertices.at n=13A003616
• Numbers k such that the continued fraction for sqrt(k) has period 93.at n=13A020432
• Number of shifted Young tableaux with height <= 3.at n=13A082395
• Column 3 of triangle A091602.at n=44A091606
• Number of compositions of n with unique smallest part.at n=19A105039
• Semiprimes whose digit reversal is a nontrivial power.at n=37A108849
• Semiprimes (A001358) whose digit reversal is a square.at n=32A115710
• G.f.: 1/p(x), where p(x) = degree 22 Salem polynomial p(x) = x^22 + x^21 - x^19 - 2*x^18 - 3*x^17 - 3*x^16 - 2*x^15 + 2*x^13 + 4*x^12 + 5*x^11 + 4*x^10 + 2*x^9 - 2*x^7 - 3*x^6 - 3*x^5 - 2*x^4 - x^3 + x + 1.at n=36A143419
• Numbers k such that (302*10^k + 13)/9 is prime.at n=19A281144
• Sum of the largest parts in the partitions of n into 8 parts.at n=35A308998
• Number of partitions of 2n that describe the degree sequence of exactly one labeled multigraph with no loops.at n=35A328863
• Triangle read by rows, T(n, k) = n! * [y^k] [x^n] exp(1/(1 - x)^(1 + y) - 1), for 0 <= k <= n.at n=24A355267