42342
domain: N
Appears in sequences
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Lucas numbers), t = (primes).at n=23A025098
- Numbers n such that n through n+6 are divisible by the same number of distinct primes.at n=21A045935
- Expansion of q / (chi(-q) * chi(-q^11))^2 in powers of q where chi() is a Ramanujan theta function.at n=34A123631
- Number of 0..n arrays x(0..5) of 6 elements with zero 4th differences.at n=30A200084