31236

Appears in sequences

• Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,51.at n=9A064262
• a(n) = Sum_{k <= n/2 } binomial(n-2k, 3k).at n=22A137356
• Number of right triangles on a (n+1)X7 grid.at n=20A189811
• Number of partitions p of n such that (number of even numbers in p) < (number of odd numbers in p).at n=43A241636
• 7-step Fibonacci sequence starting with (0,0,0,0,0,1,0).at n=22A251710
• Number of (n+1) X (1+1) arrays of permutations of 0..n*2+1 with each element having directed index change -2,0 -1,0 0,-1 or 1,1.at n=31A264622
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 553", based on the 5-celled von Neumann neighborhood.at n=31A272848
• Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=5A326100
• Number of n X 6 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=2A326103
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=30A326105
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=33A326105
• Number of compositions of 5*n-4 into parts 3 and 5.at n=13A369848
• a(n) = Sum_{k=0..floor(2*n/5)} binomial(2*n-2*k,3*k).at n=11A392401