41479

Properties

Appears in sequences

• Stirling-like number triangle defined by paired decomposition of C(n+3,3) = A000292.at n=38A080416
• Expansion of x^2/((1-4*x)*(1-3*x)^2).at n=8A086443
• Numbers p such that p = (prime(n)+ prime(n+2))/2 is prime for prime indices n=2, 3, 5...at n=34A098038
• Primes of the form (prime(prime(k)) + prime(prime(k+1)))/2.at n=31A098042
• a(n) = (5*n^3+12*n^2+n+6)/6.at n=36A114211
• Triangle of 3-Eulerian numbers.at n=34A144697
• Number of nX3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,0,2,1 for x=0,1,2,3,4.at n=8A197302
• Primes of the form 3n^3+7.at n=5A201116
• Primes of the form 2n^2 + 7.at n=17A201475
• Primes of the form 8*k^2 + 7.at n=8A201704
• Primes equal to the sum of both two and three successive semiprimes.at n=31A255897
• Primes that can be generated by the concatenation in base 3, in descending order, of two consecutive integers read in base 10.at n=42A287301
• a(n) is the number of permutations of length n that avoid the pattern 321 and the mesh pattern (12, 271) or the same sequence for the mesh patterns (12, 303), (12, 331), (12, 421), (12, 423), (12, 459), (12, 481), (12, 489).at n=11A289597
• Balanced primes of order one ending in 9.at n=14A303095
• Primes p such that the concatenation of p^3, p^2, p and 1 is prime.at n=45A323428
• Primes that are palindromic in factorial base.at n=26A333421
• Prime numbersat n=4338