20628

Appears in sequences

• Number of partitions of n in which no parts are multiples of 3.at n=49A000726
• Number of lines through at least 2 points of a 10 X n grid of points.at n=30A160850
• Number of permutations of 1..n with the Sum_{i=1..n} of (i-p(i))^2 <= (n-1)*n*(n+1)/6.at n=8A180111
• Numbers missing from A001033 despite satisfying the necessary congruence conditions (see comments).at n=30A274470
• a(n) = 3*n*(n^2 + 3*n + 4).at n=18A280304
• Numbers k such that (74*10^k + 133)/9 is prime.at n=20A293276
• Starts of runs of 3 consecutive Zeckendorf-Niven numbers (A328208).at n=21A328210
• Triangle read by rows. Number of perfect matchings by number of connected components.at n=30A362308
• Triangle read by rows: T(n,k) is k-th entry of the toric g-vector of the n-dimensional associahedron, 0 <= k <= floor(n/2).at n=22A390883