27943

Properties

Appears in sequences

• Number of ordered 5-tuples of integers from [ 1,n ] with no common factors among pairs.at n=38A015663
• Number of terms in n-th derivative of a function composed with itself 3 times.at n=21A022811
• Primes from merging of 5 successive digits in decimal expansion of e.at n=15A104846
• Primes p1 such that p1^2+p2^3=pp are average of twin primes. p1 and p2 consecutive primes, p1 < p2.at n=27A138715
• Primes p for which p + 4, p^2 + 4 and p^3 + 4 are primes.at n=12A243734
• Primes p such that 10p + 1, 100p + 1 and 1000p + 1 are also primes.at n=29A243962
• Binomial(n,4) - A290447(n).at n=43A290461
• Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=9A300678
• Prime numbersat n=3049