A376041
E.g.f. satisfies A(x) = (-log(1 - x / (1 - A(x))^3)) / (1 - A(x)).
Original entry on oeis.org
0, 1, 9, 191, 6496, 305164, 18317390, 1339293822, 115492112640, 11476262240520, 1291250885222592, 162271449317302632, 22528350072978189600, 3424249337820235241472, 565573503590604522245136, 100864333223422171393303488, 19317041144591537348567168256
Offset: 0
-
a(n) = sum(k=1, n, (3*n+2*k-2)!/(3*n+k-1)!*abs(stirling(n, k, 1)));
A376039
E.g.f. satisfies A(x) = (-log(1 - x / (1 - A(x))^3)) * (1 - A(x)).
Original entry on oeis.org
0, 1, 5, 65, 1376, 40454, 1523464, 69979734, 3794288280, 237186275520, 16794542216088, 1328558461234080, 116126748206895216, 11114654375545182864, 1156103394150386866560, 129855826037621953356864, 15664344145032570448561920, 2019701492029961287845196032
Offset: 0
-
a(n) = sum(k=1, n, (3*n-2)!/(3*n-k-1)!*abs(stirling(n, k, 1)));
A376040
E.g.f. satisfies A(x) = -log(1 - x / (1 - A(x))^3).
Original entry on oeis.org
0, 1, 7, 119, 3258, 123414, 5978082, 352880562, 24573720672, 1972239280488, 179250831525720, 18197871488362752, 2041093578923498448, 250654006995798120480, 33449544716000374458000, 4819960747934844400104480, 745867334512204468875843840
Offset: 0
-
my(N=20, x='x+O('x^N)); concat(0, Vec(serlaplace(serreverse((1-x)^3*(1-exp(-x))))))
-
a(n) = sum(k=1, n, (3*n+k-2)!/(3*n-1)!*abs(stirling(n, k, 1)));
Showing 1-3 of 3 results.