173409

Appears in sequences

• Number of arrangements of n+1 numbers x(i) in -2..2 with the sum of x(i)*x(i+1) equal to zero.at n=7A188351
• T(n,k)=Number of arrangements of n+1 numbers x(i) in -k..k with the sum of x(i)*x(i+1) equal to zero.at n=43A188358
• Number of arrangements of 9 numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.at n=1A188364
• a(n) = 324*n^2 - 564*n + 321 (n>=1).at n=23A304617
• Number of maximal subsets of {1..n} containing n such that it is possible to choose a different binary index of each element.at n=33A370641