3919944

Appears in sequences

• Tetranacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) for n >= 4 with a(0) = a(1) = a(2) = 0 and a(3) = 1.at n=27A000078
• Number of ways to reciprocally link elements of an n X 2 array either to themselves or to exactly one horizontal, vertical or antidiagonal neighbor.at n=11A220547
• Number of compositions (ordered partitions) of n into divisors of n that are at most sqrt(n).at n=24A327766
• Number of compositions (ordered partitions) of n into divisors of n that are smaller than sqrt(n).at n=24A357312
• Number of compositions (ordered partitions) of n into parts not greater than sqrt(n).at n=24A364526