2187185

Appears in sequences

• a(n) = 7*binomial(2n,n-3)/(n+4).at n=13A000588
• Triangle read by rows: T(n,k) = (4k+3)/(n+2k+2)*binomial(2n,n+2k+1).at n=44A158483
• Number of ballot sequences of length n having 10 largest parts.at n=16A244107
• Numbers k such that k and k+1 have at least 5 but not both exactly 5 distinct prime factors.at n=6A321495
• a(n) is the least integer that can be expressed as the difference of two pentagonal numbers in exactly n ways.at n=25A334034