117656

Appears in sequences

• Numbers k such that k | 7^k + 7.at n=40A015893
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 98.at n=6A031776
• Sums of 2 distinct powers of 7.at n=16A038481
• Sums of two powers of 7.at n=22A055258
• Square array T(r,m) read by antidiagonals: number of cyclically reduced words of length m in F_r.at n=41A104000
• Integers of the form p^(p-1)+p where p is prime.at n=3A104129
• a(n) = n^6 + n.at n=7A131472
• Triangle, read by rows, T(n, k) = binomial(n, k) for n < 2 and binomial(n, k) + n^(n-1) * binomial(n-2, k-1) otherwise.at n=29A146990
• Triangle, read by rows, T(n, k) = binomial(n, k) for n < 2 and binomial(n, k) + n^(n-1) * binomial(n-2, k-1) otherwise.at n=34A146990
• A simple sequence a(n) = n + n^(n-1).at n=6A172165
• Coefficients in q-expansion of (E_4^2 - E_2*E_6)/1008, where E_2, E_4, E_6 are the Eisenstein series shown in A006352, A004009, A013973, respectively.at n=7A282050
• a(n) = Sum_{d|n} n^phi(d).at n=6A345893
• a(n) = Sum_{d|n} d * (n/d)^(n-d).at n=6A358660
• Expansion of e.g.f. (1/x) * Series_Reversion( x*(1 - x^2*(exp(x) - 1)) ).at n=8A370989