77660
domain: N
Appears in sequences
- Number of length 3+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.at n=26A250322
- Number of compositions of 2n into n parts where differences between neighboring parts are in {-1,1}.at n=33A364529
- Number of subsets of {1,2,...,n} such that no two elements differ by 1, 4, or 5.at n=32A375981