47823

Appears in sequences

• Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k UUUU's starting at level 0.at n=34A135309
• Numbers k such that 2*10^k + 89 is prime.at n=29A275096
• a(n) is the number of five element sets of distinct integer-sided trapezoids whose base angles are 60 degrees that fill an equilateral triangular grid of side n units.at n=24A391498