1727605

Appears in sequences

• Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.at n=8A033116
• a(n) = n^4 + n^3 + n^2 + n + 1.at n=36A053699
• a(n) = n^8 + n^6 + n^4 + n^2 + 1.at n=6A059839
• Numbers of the form (6^{mr}-1)/(6^r-1) for positive integers m, r.at n=19A076285
• Exponent of least power of 2 having exactly n consecutive 7's in its decimal representation.at n=12A131541
• T(n,k) = (k^n)*U(n, (1/k + k)/2), where U(n,x) is the n-th Chebyshev polynomial of the second kind, square array read by antidiagonals upward (n >= 0, k >= 1).at n=50A173588
• a(n) = (36^n - 1)/35.at n=5A218739
• a(n) = 1 + sigma(n) + sigma(n)^2 + sigma(n)^3 + sigma(n)^4.at n=21A258978