18341

Properties

Appears in sequences

• Number of 4-ary rooted trees with n nodes and height exactly 7.at n=15A036631
• Primes p such that p-12, p and p+12 are consecutive primes.at n=14A053072
• Primes congruent to 51 mod 59.at n=33A142778
• Primes congruent to 41 mod 61.at n=35A142839
• Primes of the form : 2*p+1=p1(prime), 2*p1+3=p2(prime), 2*p2+5=p3(prime).at n=34A143912
• Primes of the form (5+ a triangular number A000217).at n=24A159049
• a(n) = 81*n^2 - 2247*n + 15383.at n=29A182255
• Number of distinct n-th rows in arrays whose columns are running modulus recurrence sequences.at n=10A208125
• Primes p such that if q is the next prime after p then the concatenation of p with q and the concatenation of q with p are both primes.at n=32A225575
• Primes p such that f(f(p)) is prime, where f(x) = x^4 + x^3 + x^2 + x + 1 = A053699(x).at n=18A237445
• Primes which are the average of the two adjacent primes and also of the two adjacent squarefree numbers.at n=19A245589
• Smallest exponent m such that 2^m begins and ends with the same n digits, allowing any other digits in between.at n=3A256526
• Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=1A259001
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=7A259006
• Number of (2+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=2A259007
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 331", based on the 5-celled von Neumann neighborhood.at n=29A271279
• Balanced primes of order one ending in 1.at n=11A303092
• Prime numbersat n=2102