104000
domain: N
Appears in sequences
- Numbers n such that A048767(n) = n.at n=40A048768
- a(n) = 10*a(n-1) - 20*a(n-2), a(0)=1, a(1)=6.at n=6A090041
- Numbers with prime factorization pq^3r^6.at n=24A190467
- Number of ways to arrange 4 nonattacking queens on the lower triangle of an n X n board.at n=11A194494
- Number of (w,x,y,z) with all terms in {1,...,n} and w>2x and y>3z.at n=41A212518
- Triangular array read by rows: 3 dimensional analog of A227997.at n=7A229955
- Product of n and the sum of all divisors of all positive integers <= n.at n=49A256533
- Number of maximal matchings in the 2 X n rook graph.at n=8A281433
- Number of nonisomorphic proper colorings of partition star graph using five colors.at n=53A297569
- Numbers whose ordered prime signature is equal to the set of distinct prime indices in decreasing order.at n=27A324571
- Array read by antidiagonals: T(n,m) is the number of maximal matchings in the rook graph K_n X K_m.at n=57A341847
- Array read by antidiagonals: T(n,m) is the number of maximal matchings in the rook graph K_n X K_m.at n=63A341847
- Numbers whose square can be represented in exactly three ways as the sum of a positive square and a positive fourth power.at n=12A345968
- a(n) = Sum_{k=0..floor(n/3)} 2^k * binomial(2*k+1,2*n-6*k+1).at n=22A387769