223300

Appears in sequences

• Partial sums of A007585.at n=27A051797
• Triangle T(n, k) = A143491(n+2, k+2) + A143491(n+2, n-k+2), read by rows.at n=39A155755
• Triangle T(n, k) = A143491(n+2, k+2) + A143491(n+2, n-k+2), read by rows.at n=41A155755
• Even, nonzero decagonal pyramidal numbers.at n=26A218331
• a(n) is the least integer that is pyramidal in exactly n ways.at n=6A333916
• a(n) is the smallest square pyramidal number divisible by exactly n square pyramidal numbers.at n=7A359094
• G.f. A(x) satisfies: A(x) = x * (1 + A(x))^4 / (1 - 3 * A(x)).at n=6A366015
• a(n) = (1/n) * Sum_{k=0..n-1} binomial(n+k-1,k) * binomial(4*n,n-k-1) * (n-3)^k.at n=5A366204