75080

Appears in sequences

• Sum of all digits in all even numbers from 0 to 8(10^(k+1)-1)/9 (with (k+1) 8's).at n=4A089350
• Array read by antidiagonals: T(n,k) = variant of Knuth's Fibonacci (or circle) product of n and k (A101330).at n=49A101385
• a(1) = 1, a(2) = 2 then the least number starting with n so that every term divides the concatenation of its neighbors.at n=6A113695
• Number of arrangements of n+2 nonzero numbers x(i) in -7..7 with the sum of x(i)*x(i+1) equal to zero.at n=3A188247
• T(n,k)=Number of arrangements of n+2 nonzero numbers x(i) in -k..k with the sum of x(i)*x(i+1) equal to zero.at n=48A188249
• Number of arrangements of 6 nonzero numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.at n=6A188252
• Number of linear extensions of the one-level grid poset G[(1^n), (1^(n-1)), (1^(n-1))].at n=3A274764