31643

Properties

Appears in sequences

• Euclid-Mullin sequence (A000945) with initial value a(1)=8191 instead of a(1)=2.at n=33A051334
• Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,3,4,0 for x=0,1,2,3,4.at n=8A196952
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,1,3,4,0 for x=0,1,2,3,4.at n=57A196957
• Number of simple unlabeled graphs on n nodes with exactly 5 connected components that are trees or cycles.at n=14A215985
• Primes p such that both prevprime(p^2) - 2 and nextprime(p^2) + 2 are also primes.at n=12A226986
• Expansion of Product_{k>=1} (1 + x^k) * (1 + x^(2*k)) * (1 + x^(3*k)) * (1 + x^(4*k)).at n=35A327046
• Numbers k such that A361338(k) = 10.at n=11A361349
• Number of integer partitions of n into parts > 1 whose product is a multiple of n.at n=55A379734
• Isolated primes in A381019.at n=2A381027
• Prime numbersat n=3403