19302

Appears in sequences

• Expansion of e.g.f. exp(exp(exp(x)-1)-1).at n=7A000258
• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RTE = RUB-3 [Si24O48].2R starting with a T3 atom.at n=13A019223
• a(n) = Sum_{k=0..m} (k+1) * A026120(n, k), where m=0 for n=0,1; m=n for n >= 2.at n=8A027326
• Triangle read by rows: matrix cube of the Stirling2 triangle A008277.at n=21A039811
• a(n)= 3*a(n-3) +3*a(n-6) +a(n-9).at n=21A109530
• Array T(n,k) = A153277(n-1,k) = A144150(n,k-1) read by downwards antidiagonals.at n=42A111672
• Number of ascents of length at least 2 in all skew Dyck paths of semilength n.at n=27A128751
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where the e.g.f. of column k is 1+g^(k+1)(x) with g = x-> exp(x)-1.at n=52A144150
• Array read by antidiagonals of higher order Bell numbers.at n=34A153277
• Number of 2n-digit primes that are concatenation of n two-digit distinct primes p_1...p_n: 10<p_1<p_2<...<p_n>98.at n=9A168519
• a(n) = 27*n^2/2 + 45*n/2 - 12 (n>=1).at n=36A304375
• Number of unlabeled balanced rooted semi-identity trees with 2n-1 nodes and depth n.at n=22A306274
• a(n) = Sum_{k=0..n} n^k * binomial(2*n,n-k).at n=5A371825