22810

Appears in sequences

• Aliquot sequence starting at 660.at n=19A014362
• Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 4 ones in any 3 X 3 X 3 subtriangle.at n=7A153930
• Number of 6-step S, NW and NE-moving king's tours on an n X n board summed over all starting positions.at n=13A187380
• Number of length n+2 0..7 arrays with every three consecutive terms having the sum of some two elements equal to twice the third.at n=9A248432
• Numbers n such that the decimal equivalent of the binary reflected Gray code representation of n is a palindromic prime.at n=42A281382
• p-INVERT of (1,0,0,1,0,0,1,0,0,...), where p(S) = 1 - 2 S - S^2.at n=10A290616
• a(n) = 1 + Sum_{k=1..n-1} binomial(n-1,k) * a(k) * a(n-k-1).at n=8A332776