59171

Appears in sequences

• a(n) = 5 + floor((1 + Sum_{j=1..n-1} a(j)) / 2).at n=23A120135
• Binomial transform of double factorial n!! (A006882).at n=10A263529
• Starting at n, a(n) is the number of times we travel to a position 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=17A324674