239400

Appears in sequences

• a(n) = 2*(n+1)*binomial(n+2,4).at n=17A027777
• Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1 and 32*k+1 are primes.at n=27A124413
• Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1, 32*k+1 and 64*k+1 are primes.at n=6A124414
• Numbers with prime factorization pqr^2s^2t^3.at n=6A190386
• Record values in partial LCM-products (A233287) of Fibonacci entry points (A001177).at n=8A233283
• a(n) = lcm_{i=1..n} A001177(i); partial LCM-products of Fibonacci entry points.at n=36A233287
• a(n) = lcm_{i=1..n} A001177(i); partial LCM-products of Fibonacci entry points.at n=37A233287
• a(n) = lcm_{i=1..n} A001177(i); partial LCM-products of Fibonacci entry points.at n=38A233287
• a(n) = lcm_{i=1..n} A001177(i); partial LCM-products of Fibonacci entry points.at n=39A233287
• a(n) = lcm_{i=1..n} A001177(i); partial LCM-products of Fibonacci entry points.at n=40A233287
• a(n) = lcm_{i=1..n} A001177(i); partial LCM-products of Fibonacci entry points.at n=41A233287
• Expansion of Product_{k>=1} 1/(1 - k*(k+1)*x^k).at n=11A265836
• Primitive 4-abundant numbers: Numbers k such that sigma(k) > 4k (A068404) all of whose proper divisors d are 4-deficient numbers (having sigma(d) < 4d).at n=19A307114
• a(n) is the number of subsets of {1..n} that contain exactly 2 odd and 3 even numbers.at n=41A330300
• Primitive terms of A023198: numbers k with the property sigma(k)/k >= 4 that are not divisible by any other number with that property.at n=21A392936