64123

Properties

Appears in sequences

• Terminating decimals of length n of form p/5^q using at most one of each nonzero digit.at n=11A027905
• Primes p such that 2^p-1 and the p-th Fibonacci number have a common factor. Prime terms of A074776.at n=29A080050
• Number of nX3 0..1 arrays with every element unequal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=18A318086
• a(0) = 1; a(n) = Sum_{k=0..floor(n/4)} binomial(n-3*k,k) * a(k).at n=33A352041
• Positions of new record minima A372935 in A071961.at n=25A372936
• a(n) is the smallest prime that starts the first occurrence of exactly n consecutive primes in A381019.at n=26A381616
• Prime numbersat n=6424