28501

Appears in sequences

• Stirling numbers of second kind S(n,3).at n=11A000392
• Triangle of Stirling numbers of the second kind, S2(n,k), n >= 1, 1 <= k <= n.at n=57A008277
• Stirling numbers of second kind S2(11,n).at n=2A011560
• a(n) = floor(binomial(n,5)/5).at n=30A011851
• a(n) = floor(n(n-1)(n-2)(n-3)/20).at n=29A011930
• Positive numbers k such that k and 2*k are anagrams in base 9 (written in base 9).at n=38A023079
• Number of partitions of n into parts not of the form 15k, 15k+4 or 15k-4. Also number of partitions with at most 3 parts of size 1 and differences between parts at distance 6 are greater than 1.at n=43A035958
• Expansion of Molien series for relative invariants of 8-dimensional complex Clifford group.at n=22A043330
• Number of primitive (aperiodic) word structures of length n which contain exactly three different symbols.at n=10A056279
• Number of periodic palindromic structures of length n using exactly three different symbols.at n=20A056509
• Numbers k such that 5*3^k + 2 is prime.at n=37A058590
• 3rd level triangle related to Eulerian numbers and binomial transforms (A062253 is second level, triangle of Eulerian numbers is first level and triangle with Z(0,0)=1 and Z(n,k)=0 otherwise is 0th level).at n=36A062254
• G.f.: Product((1+x^i)/(1-x^i),i=1..n-1)/(1-x^n), with n = 5.at n=45A091773
• Row sums of triangle A096815, in which A096815(n,k) equals the k-th term of the convolution of the two prior rows indexed by (n-k) and k.at n=19A096816
• Numbers k such that 13k = 6j^2 + 6j + 1.at n=38A106390
• Irregular triangle read by rows, Stirling numbers of the second kind: columns shifted to allow (1, 1, 2, 2, 3, 3, ...) terms per row.at n=44A136011
• Binomial transform of [1, 3, 4, 3, 2, 0, 0, 0, ...].at n=24A136395
• Triangle read by rows: T(n,k) is the number of primitive (aperiodic) word structures of length n using exactly k different symbols.at n=57A137651
• Triangle read by rows: counts series-parallel networks by the number of series connections.at n=46A140945
• Triangle read by rows: counts series-parallel networks by the number of series connections.at n=53A140945