30041

Appears in sequences

• Graham-Sloane-type lower bound on the size of a ternary (n,3,4) constant-weight code.at n=43A030504
• Numbers k such that 2^k - 3 is prime.at n=41A050414
• Indices of primes in sequence defined by A(0) = 57, A(n) = 10*A(n-1) + 17 for n > 0.at n=9A101588
• Row sums of triangle A125280, which is the convolution triangle of A030266.at n=8A125280
• Irregular triangular array T(n,k) of consecutive composites.at n=38A226085
• Number of length n+3 0..2 arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..2 introduced in 0..2 order.at n=8A243027
• T(n,k)=Number of length n+3 0..k arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..k introduced in 0..k order.at n=53A243033
• Pseudoprimes to base 6, written in base 6.at n=16A262103
• Number of ways to choose a rooted partition of each part in a constant rooted partition of n.at n=28A301761
• Numbers k such that A003415(k) >= A276086(k) and gcd(k, A003415(k)) = gcd(k, A276086(k)), where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.at n=21A369959
• Numbers k such that (A276086(k)/s)^s >= k^(s-1) and A276086(k) <= A003415(k), where A003415 is the arithmetic derivative, A276086 is the primorial base exp-function, and s = bigomega(k).at n=22A370128
• Intersection of A392605 and A392611.at n=33A392606