89148

Appears in sequences

• Super ballot numbers: 6(2n)!/(n!(n+2)!).at n=12A007054
• a(n) = 6*(2n-4)!/((n-2)!n!), if n>2. a(0) = 1, a(1) = a(2) = 2.at n=14A091712
• Triangle read by rows: T(n,k) is the number of skew Dyck paths of semilength n having k LD's (n>=0; 0<=k<=floor((n-1)/2)).at n=26A128733
• a(n) = n*(n+1)*(n+2)*(n+3)*(n+4)*(n^2+4*n+37)/5040.at n=14A257201
• Numbers k such that 4^k - 3^k + 2^k is prime.at n=14A317887
• a(n) = 2*a(n-1) + 2*a(n-3) + a(n-4) - 1, with a(0) = 0 = a(1), a(2) = 2, and a(3) = 3.at n=15A353582
• Denominator of canonical iterated stribolic area Integral_{t=0..1} h_n(t) dt (of order 1).at n=6A369991
• a(n) = 3/(n + 1) * Catalan(2*n).at n=6A387248