53407

Properties

Appears in sequences

• Number of carbon (rooted) trees with n carbon atoms = unordered 4-tuples of ternary trees.at n=15A000678
• Number of 3-rowed binary matrices with n ones and no zero columns, up to row and column permutation.at n=36A058053
• Primes p such that continued fraction of (1 + sqrt(p))/2 has period 12 : primes in A146336.at n=27A146357
• Honaker primes of the form p = 2*k-1 with sum-of-digits(p) = sum-of-digits(k).at n=31A176111
• Prime numbers p such that p - primepi(p) is a square, where primepi is the prime counting function.at n=28A245061
• Main diagonal of Ludic array A255127 (and A255129): a(n) = A255127(n,n).at n=35A255410
• Prime numbersat n=5446