69520

Appears in sequences

• a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = (Lucas numbers).at n=18A024459
• The first 10 digits of the fourth root of n contain the digits 0-9.at n=22A119519
• a(n) = 136*2^n - 112.at n=9A305165
• Number of tilings of a 3 X n strip with dominos and U-shaped pentominos.at n=16A385242