86311

Properties

Appears in sequences

• Expansion of e.g.f. 1/sqrt(exp(x)*(2-exp(x))).at n=8A014304
• Primes whose 10's complement is a square.at n=13A083004
• Primes of the form prime(nk) followed by prime(k).at n=28A089788
• Modular recursion: a(0)=a(1)=a(2)=a(3)=1, thereafter: a(n) equals a(n - 2) + a(n - 3) when n = 0 mod 5, a(n - 1) + a(n - 3) when n = 1 mod 5, a(n - 1) + a(n - 2) when n = 2 mod 5, a(n - 1) + a(n - 4) when n = 3 mod 5, and a(n - 1) + a(n - 2) + a(n - 3) otherwise.at n=33A206012
• Prime numbersat n=8393