183120

Appears in sequences

• Expansion of e.g.f.: exp(x^2/(1-x)).at n=8A052845
• Triangle T(n,k) is the number of partitions of an n-set into lists (cf. A000262) with k lists of size 1.at n=36A114329
• Smallest number k such that prime(n) is the n-th divisor of k.at n=27A221647
• Number T(n,k) of permutations of [n] with exactly k ascents from odd to even numbers; triangle T(n,k), n>=0, 0<=k<=floor(n/2), read by rows.at n=26A231777
• Fifth differences of 7th powers (A001015).at n=10A259907
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. Product_{i>k} exp(x^i).at n=53A293053
• Expansion of e.g.f. exp(x^2/(1+x)).at n=8A293120
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. exp(x^(k+1)/(1+x)).at n=53A293133
• Triangle T(n,k) defined by Sum_{k=1..n} T(n,k)*u^k*x^n/n! = Product_{j>0} ( exp(j*x^j/(1 - x^j)) )^u.at n=32A338865
• Expansion of e.g.f. exp(x^2+3*x^3).at n=8A366950