878423

Appears in sequences

• a(n) = (n+1)(n+2)^3*(n+3)(n^2 + 4n + 5)/120.at n=12A114239
• a(n) = (a(n-1) - a(n-3))*7^((1+(-1)^n)/2) with a(6)=5, a(7)=4, a(8)=22.at n=19A215139