63221

Appears in sequences

• A129957(n) - n*(n-1)/2.at n=40A129959
• Fibonacci entry points: a(n) = smallest m such that prime(A075702(n)) divides Fibonacci(m).at n=4A175026
• Number of 0..1 arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo 2.at n=29A200661
• Number of length n+3 0..4 arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..4 introduced in 0..4 order.at n=6A243029
• T(n,k)=Number of length n+3 0..k arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..k introduced in 0..k order.at n=51A243033