30199

Appears in sequences

• Number of segments created by diagonals of n-gon.at n=23A014629
• Numbers whose base-4 representation contains exactly four 1's and four 3's.at n=17A045133
• Number of -4..4 arrays x(0..n-1) of n elements with zero sum, and adjacent elements not both strictly positive and not both strictly negative.at n=6A199894
• T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zero sum, and adjacent elements not both strictly positive and not both strictly negative.at n=51A199898
• Number of -n..n arrays x(0..6) of 7 elements with zero sum, and adjacent elements not both strictly positive and not both strictly negative.at n=3A199902
• Two-column table read by rows: Primitive distinct pairs that have the same value of phi, sigma, and tau.at n=38A322688
• Sum of the products of pairs of Padovan numbers which are two apart, starting from A000931(5).at n=17A329178