243091

Properties

Appears in sequences

• Numbers n such that n+0, n+1, n+2, n+3 and n+4 are, in some order, 1 * a prime, 2 * a prime, 3 * a prime, 4 * a prime and 5 * a prime.at n=10A071367
• a(n) = 1 + Max_{0<=i<=j<=k; i+j+k=n-1} a(i)*a(j)*a(k) for n>0, with a(0) = 1.at n=25A336631
• Numbers k such that tau(k) + tau(k+1) + tau(k+2) + tau(k+3) + tau(k+4) = 20, where tau is the number of divisors function A000005.at n=13A350699
• Expansion of (1/x) * Series_Reversion( x / (1/(1-x) + x^2) ).at n=11A369618
• Prime numbersat n=21473