28894

Appears in sequences

• Number of balanced symmetric graphs.at n=13A005194
• Number of n X 5 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero.at n=7A298317
• Even numbers in A090252 in order of appearance.at n=21A354255
• a(n) = Sum_{k=1..n} k! * k^(n-3) * Stirling1(n,k).at n=6A373869