81368

Appears in sequences

• Expansion of ((1-2x)*sqrt(1+2x) + sqrt(1-2x))/(2*(1-2x)^(5/2)).at n=13A099326
• Triangle T(n, k) = Sum_{j=0..n} (2*n)!/((2*n-k-j)!*j!*k!), read by rows.at n=29A141723
• A partition product of Stirling_1 type [parameter k = 2] with biggest-part statistic (triangle read by rows).at n=38A157392
• Numbers that are 1 more or less than the sum of the factorials of their digits.at n=1A215849