34488

Appears in sequences

• Take pairs (x,y) with Sum_{j = x..y} j = concatenation of x and y. Sort pairs on y then x. This sequence gives x of each pair.at n=39A070152
• Number of nondecreasing -n..n vectors of length 4 whose dot product with some nonincreasing -n..n vector equals 4.at n=13A226401
• First differences of (provable) Sierpiński numbers (A076336).at n=21A270971
• Total number of nodes summed over all lattice paths from (0,0) to (n,n) that do not go below the x-axis or above the diagonal x=y and consist of steps U=(1,1), D=(1,-1), H=(1,0) and S=(0,1).at n=5A286765
• Number of integer partitions of n containing all prime indices of their parts.at n=47A324753
• a(n) = the total lengths of all the top arches of semi-meanders with n top arches where arch length = 1 + number of arches covered by the arch.at n=9A385239
• Number of one-sided polyaboloes (or polytans) with n cells, where the orientation of two triangles sharing a hypotenuse (making up a square) matters.at n=8A390994