28994

Appears in sequences

• Irregular triangle read by rows: Whitney numbers of the second kind a(n,k), n >= 1, k >= 0, for the star poset.at n=54A007799
• Numbers k that divide A005554(k) (the sum of consecutive Motzkin numbers).at n=40A081741
• Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and column sum not 2 3 6 or 7 and every diagonal and antidiagonal sum 2 3 6 or 7.at n=10A251890
• Numbers n such that n!3 - 3^7 is prime, where n!3 = n!!! is a triple factorial number (A007661).at n=33A267382
• a(n) = Sum_{k=1..n} k! * k^(n-1) * Stirling1(n,k).at n=5A373857
• A382168 with duplicates removed.at n=40A382169