n^2 * a(n) = 2*(7*n^2 - 7*n + 3)*a(n-1) - 12*(7*n^2 - 14*n + 9)*a(n-2) + 39*(7*n^2 - 21*n + 18) * a(n-3) - 72*(7*n^2 - 28*n + 30)*a(n-4) + 72*(7*n^2 - 35*n + 45) * a(n-5) - 216*(n-3)^2 * a(n-6), with a(0)=1, a(1)=6, a(2)=24, a(3)=78, a(4)=216, a(5)=504.
A276179
n^2 * a(n) = 2*(7*n^2 - 7*n + 3)*a(n-1) - 12*(7*n^2 - 14*n + 9)*a(n-2) + 39*(7*n^2 - 21*n + 18) * a(n-3) - 72*(7*n^2 - 28*n + 30)*a(n-4) + 72*(7*n^2 - 35*n + 45) * a(n-5) - 216*(n-3)^2 * a(n-6), with a(0)=1, a(1)=6, a(2)=24, a(3)=78, a(4)=216, a(5)=504.
Terms
- a(0) =1a(1) =6a(2) =24a(3) =78a(4) =216a(5) =504a(6) =906a(7) =756a(8) =-2808a(9) =-17832a(10) =-57312a(11) =-104832a(12) =81882a(13) =1734156a(14) =9360576a(15) =35755956a(16) =106475472a(17) =232967664a(18) =215497680a(19) =-1178534304a(20) =-8734303296a(21) =-36146763648a(22) =-108833048064a(23) =-220247838720a(24) =-46688571558
External references
- oeis: A276179