68614

Appears in sequences

• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = A001950 (upper Wythoff sequence).at n=28A024465
• Numbers m that minimize | k /(k- EulerPhi(k)) - golden ratio phi | when k runs over all the numbers with the same number of digits as m.at n=14A065758
• Number of permutations of length n which avoid the patterns 1234, 2431, 4312.at n=18A116765
• Central coefficients in (1 + 2^n*x + x^2)^n.at n=4A188202