78121

Properties

Appears in sequences

• Row sums of A014621.at n=6A014622
• Primes of the form p^k - p + 1 for prime p.at n=24A034915
• a(0)=0, a(1)=2, a(n) = smallest prime > a(n-1)+a(n-2).at n=22A055502
• Shifts left under exponential reversion.at n=7A067146
• Primes of the form 4*k^2 - 10*k + 7 with k positive.at n=37A073337
• Largest prime <= 5^n.at n=6A104090
• Sieve performed by successive iterations of steps where step m is: keep m terms, remove the next 3 and repeat; as m = 1,2,3,.. the remaining terms form this sequence.at n=27A112561
• Triangle read by rows n>=0: the largest prime <= m^n+2 in columns m=3..n+3.at n=30A118132
• Prime numbers of the form 5^k +- 4 for k >= 1.at n=3A144233
• a(n) = 5^n - 4.at n=6A164785
• Primes of the form prime(i)*prime(i+1) + prime(i+2) + 1.at n=17A180945
• Primes of the form 5^k - 4.at n=1A181285
• Monotonic ordering of nonnegative differences 5^i-4^j, for 40>= i>=0, j>=0.at n=35A192162
• Square array T(n,k) = k^n - k + 1 read by antidiagonals.at n=59A193871
• Primes of the form 5*n^3-4.at n=3A200736
• Primes of the form 5*k^2 - 4.at n=28A201786
• E.g.f. A(x) satisfies: A'(x) = 1/(1 - A(A(x))).at n=6A210949
• Number of 2 X 2 matrices having all terms in {1,...,n} and even determinant.at n=18A211064
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and even determinant.at n=9A211154
• Primes of the form 2520k + 1 for some k.at n=13A217588