73730

Appears in sequences

• Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,2.at n=5A037550
• Hypotenuses of special Pythagorean triples constructed from twin primes as follows: {u, w}={p,p+2}; side a=2p(p+2), side b=(p+2)^2-p^2 and the terms of sequence are values of c=a(n)=p^2+(p+2)^2=phi(a/2)+1+sigma(a/2)+1.at n=13A063533
• Antidiagonal sums of triangle A118185: a(n) = Sum_{k=0..[n/2]} 4^(k*(n-2*k)) for n>=0.at n=8A118187
• Numbers which are the sum of two squared primes in exactly four ways (ignoring order).at n=21A226599
• Numbers that are the sum of five fourth powers in four or more ways.at n=29A344354
• Numbers that are the sum of five fourth powers in exactly four ways.at n=27A344355