A303568
a(n) = [x^n] ((Sum_{k=0..n} (k+3)!*x^k)/(Sum_{k=0..n} (k+3)!*(-x)^k))^(1/4).
Original entry on oeis.org
1, 2, 2, 32, 62, 1764, 3916, 173376, 393446, 25166076, 56406348, 4958003840, 10882283500, 1264942740680, 2721161685880, 405344510959872, 857860989902854, 159511701001085164, 333452808033317004, 75711389658286217024, 156849644184430434436
Offset: 0
-
N=66; x='x+O('x^N); Vec((sum(k=0, N, (k+3)!*x^k)/sum(k=0, N, (k+3)!*(-x)^k))^(1/4))
A303569
a(n) = [x^n] ((Sum_{k=0..n} (k+7)!*x^k)/(Sum_{k=0..n} (k+7)!*(-x)^k))^(1/8).
Original entry on oeis.org
1, 2, 2, 80, 158, 9428, 21740, 1814144, 4326566, 480716188, 1138919436, 162673628256, 377710551084, 67537379669352, 153236971128120, 33578612305618176, 74565718435602822, 19669491236331371820, 42886189370197775372, 13410838610779209885664
Offset: 0
-
N=20; x='x+O('x^N); Vec((sum(k=0, N, (k+7)!*x^k)/sum(k=0, N, (k+7)!*(-x)^k))^(1/8))
A303566
a(n) = [x^n] (Sum_{k=0..n} (k+1)!*x^k)/(Sum_{k=0..n} (k+1)!*(-x)^k).
Original entry on oeis.org
1, 4, 8, 40, 128, 1168, 4448, 66400, 268544, 6124480, 25118336, 827294848, 3386501120, 153439657216, 624706655744, 37378784384512, 151446759993344, 11573673369828352, 46729404312578048, 4439994292732364800, 17884613664930529280, 2067374053521268559872
Offset: 0
-
N=66; x='x+O('x^N); Vec(sum(k=0, N, (k+1)!*x^k)/sum(k=0, N, (k+1)!*(-x)^k))
A316090
a(n) = [x^n] (Sum_{k=0..n} (k*x)^k)/(Sum_{k=0..n} (-k*x)^k).
Original entry on oeis.org
1, 2, 2, 48, 94, 5694, 12352, 1539850, 3323890, 737028224, 1556371198, 548747031342, 1138137849328, 586694732526026, 1202647898994626, 852409708509446800, 1734703213512100766, 1616070775292699964094, 3273912763003648926368, 3875483980992048140938410
Offset: 0
-
N=66; x='x+O('x^N); Vec((sum(k=0, N, (k*x)^k))/(sum(k=0, N, (-k*x)^k)))
Showing 1-4 of 4 results.