19258

Appears in sequences

• Sums of 4 distinct powers of 7.at n=10A038483
• a(n) = Sum_{d divides n} d^(n/d + 1).at n=25A078308
• Number of (1,0)-steps of weight 1 in all weighted lattice paths in L_n.at n=11A182884
• Numbers k such that 8*R_k + 10^k - 7 is prime, where R_k = 11...11 is the repunit (A002275) of length k.at n=10A259119
• a(n) = Sum_{d|n} d^2 * (d+1)/2.at n=32A278403
• Number of integer compositions of n with all run-lengths > 2.at n=37A353400