128649

Appears in sequences

• a(n) = n*(n+1)*(n^2 + 21*n + 50)/24.at n=36A101854
• Number of length n+3 0..4 arrays with some pair in every consecutive four terms totalling exactly 4.at n=4A245946
• T(n,k)=Number of length n+3 0..k arrays with some pair in every consecutive four terms totalling exactly k.at n=32A245950
• Number of length 5+3 0..n arrays with some pair in every consecutive four terms totalling exactly n.at n=3A245955