25871

Appears in sequences

• a(n) = (2*n - 1)*(3*n^2 - 3*n + 2)/2.at n=20A063491
• Odd numbers n for which 17 is the smallest i (>= 1) with Jacobi symbol J(i,n) getting either a value 0 or -1.at n=34A112077
• a(n) = 784*n - 1.at n=32A158399
• Starting at n, a(n) is the number of times we move from a positive spot to a spot we have already visited according to the following rules. On the k-th step (k=1,2,3,...) move a distance of k in the direction of zero. If the number landed on has been landed on before, move a distance of k away.at n=17A324684
• Expansion of e.g.f. -Sum_{k>=1} log(1 - (exp(x) - 1)^k) / k.at n=6A330351