2331890

Appears in sequences

• Binomial coefficient C(8n,n-7).at n=4A004388
• Binomial coefficients C(n,84).at n=4A017748
• Binomial coefficients C(88,n).at n=4A017804
• a(n) = binomial(4*n,4).at n=21A060541
• Doubly pentagonal numbers: a(n) = n*(3*n-2)*(3*n-1)*(3*n+1)/8.at n=29A232713