51471

Appears in sequences

• Pisot sequence T(3,7), a(n) = floor(a(n-1)^2/a(n-2)).at n=12A020746
• Numbers in which all pairs of consecutive base-7 digits differ by 3.at n=45A033078
• a(n) = floor(7^7/n).at n=15A057069
• Sum of squares of divisors of square numbers.at n=13A065827
• a(n) = floor(2^n*Pi).at n=15A068425
• Duplicate of A068425.at n=14A088970
• Half the number of length n integer sequences with sum zero and sum of squares 98.at n=5A157539
• Jordan function ratio J_6(n)/J_2(n).at n=13A194532
• Volume of elliptic cone (rounded down) with semi-minor axis = height = n and semi-major axis = 3*n/2.at n=31A228391
• "Primitive" numbers k such that k divides 4^k - 1.at n=26A323203
• Numbers k that divide the k-th little Schroeder number.at n=20A372903