34281

Appears in sequences

• a(1) = 5; a(n+1) = a(n)-th nonprime, where nonprimes begin at 1.at n=43A025005
• Numbers n such that n-1, n and n+1 can be expressed as a sum of 2 squares in at least 2 ways.at n=4A091459
• Shorthand for A157033, the smallest prime with 2^n digits.at n=15A157034
• a(n) = (4*n^3 - 6*n^2 + 8*n + 3)/3.at n=30A161712
• Golden Triangle sums: a(n)=a(n-4)+A001654(n) with a(0)=0, a(1)=1, a(2)=2 and a(3)=6.at n=12A180666
• a(n) = n*(n + 1)*(n^2 + 17*n + 54)/24.at n=26A387204