49477

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 91.at n=34A020430
• Convolution of Lucas numbers and A023533.at n=21A023623
• Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,2.at n=6A037499
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 0)}.at n=11A148533
• Primes p such that 8*p^2-2*p-1 divides Fibonacci(p).at n=38A159231
• Lexicographically least sequence of primes (including 1) that are sum-free.at n=19A225947
• Number of n X 2 -2..2 arrays of 2 X 2 subblock diagonal sums minus antidiagonal sums for some (n+1) X 3 binary array with rows and columns of the latter in lexicographically nondecreasing order.at n=11A227056
• Largest prime factor of 2^(2*n+1)+2^(n+1)+1.at n=14A229768
• Primes having only {4, 7, 9} as digits.at n=31A261183
• Number of n X 4 0..1 arrays with every element unequal to 0, 1, 2, 4 or 8 king-move adjacent elements, with upper left element zero.at n=9A305241
• Primes p such that the order of 2 mod p is less than the square root of p.at n=35A333245
• a(n) is the least prime > a(n-2) such that a(n-1)+a(n) is a square.at n=31A359582
• Numbers k such that k divides A243071(k).at n=37A364497
• Odd numbers k such that k divides A243071(k).at n=5A364498
• Number of subsets of {1..n} whose cardinality is not the sum of two distinct elements.at n=17A367400
• Prime numbersat n=5084