40444

Appears in sequences

• Numbers having four 4's in base 10.at n=4A043508
• Numbers k such that the k-th prime is in A057468.at n=24A102808
• Numbers whose decimal expansion contains only 0's and 4's.at n=23A169967
• Numbers that can be written using its own digits in order and by using addition and factorial operators.at n=17A195670
• Number of length n+5 0..1 arrays with every six consecutive terms having the maximum of some two terms equal to the minimum of the remaining four terms.at n=12A250074
• Starts of runs of 3 consecutive factorial base Niven numbers (A118363).at n=14A328206
• a(n) = Sum_{k=0..floor(n/3)} k! * (n - 3*k)!.at n=8A339515
• a(n) is equal to the sum of the factorials of the digits of a(n-1), with a(1) = 0; each time a duplicated term appears, we replace it with the smallest integer not yet in the sequence and iterate.at n=47A351328