18821

Appears in sequences

• a(n)^3 is smallest cube containing exactly n 6's.at n=7A048371
• Numbers whose cubes contain more than half the same digit and do not end in 0.at n=37A060814
• Reversion of y - y^2 - y^4 - y^5.at n=10A063023
• Least number k such that the square root of {k^2 + (Prime[n + k] - Prime[n])^2} is an integer; or 0 if no such number exists.at n=5A066689
• a(n+3) = floor( ( a(n) + 2*a(n+1) + 3*a(n+2) )/4 ), with a(0), a(1), a(2) equal to 0, 1, 2.at n=41A074732
• Number of n X 4 1..4 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.at n=3A166824
• Number of positive special sums of integer partitions of n.at n=25A301854
• Products of three distinct strong primes.at n=12A363782