49830

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = (1, p(1), p(2), ...).at n=27A024460
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = (primes).at n=26A024468
• Numbers with exactly 5 distinct prime factors each of which is a palindrome.at n=9A046403
• Numbers k such that k+1, 2k+1, 3k+1, 4k+1 are all prime.at n=17A237189
• G.f. = b(2)*b(6)*b(10)/(x^15+x^14+x^13+x^12+x^11-2*x^5-x^4-x^3-x^2-x+1), where b(k) = (1-x^k)/(1-x).at n=14A266373
• The index of prime(n) in A337182.at n=41A338222