29404

Appears in sequences

• a(n)-th prime is sum of first k primes for some k.at n=35A020641
• Composite n such that (n-1)*phi(n) is a perfect square.at n=26A069953
• A weighted tribonacci sequence, (1,3,9).at n=10A103770
• Triangle read by rows, T(n, k) = S(k, n) with S(n, n) = 1, S(0, n) = 0 and otherwise S(k,n) = Sum_{i=1..n-k+1} k^i*S(k-1, n-i), for n>=0 and 0<=k<=n.at n=40A269955
• Number of regions formed after n points have been placed in general position on each edge of a triangle (as in A365929).at n=11A367015
• Period of Langton's ant on an n X 3 torus.at n=13A386970