129145076

Appears in sequences

• a(n) = 3^n + n^3.at n=17A001585
• Numbers of the form p^3 + 3^p for p prime.at n=6A097059
• Numbers of the form a^b+b^a, a and b are odd primes, b > a.at n=6A173055
• Numbers of the form a^b+b^a, a and b are primes.at n=18A173056
• a(0)=0, a(1)=1; for n>1, a(n) = a(n-2)^a(n-1) + a(n-1)^a(n-2).at n=6A263048
• a(n) = Sum_{p|n, p prime} p^sopf(n/p).at n=50A369912