288360150

Appears in sequences

• Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.at n=10A033117
• Numbers of the form (7^{mr}-1)/(7^r-1) for positive integers m, r.at n=26A076286
• a(n) = (49^n - 1)/48.at n=6A218753
• Array t(n,k) of sum of successive even powers of primes, where t(n,k) = sum_(j=0..k-1) prime(n)^(2j), with n>=1 and k>=0, read by ascending antidiagonals.at n=51A241855