A370580
a(n) = (n-1)! * Sum_{d|n} d/(d-1)!.
Original entry on oeis.org
1, 3, 5, 22, 29, 546, 727, 18488, 100809, 1164250, 3628811, 208232652, 479001613, 18741602894, 236107872015, 4796881689616, 20922789888017, 1618457192352018, 6402373705728019, 471378116297088020, 6105908234409984021, 153272981387362636822
Offset: 1
-
a(n) = (n-1)!*sumdiv(n, d, d/(d-1)!);
-
my(N=30, x='x+O('x^N)); Vec(serlaplace(sum(k=1, N, x^k/k*exp(x^k))))
A370603
a(n) = n! * Sum_{d|n} 1/((d-1)! * (n/d)!^(d-1)).
Original entry on oeis.org
1, 4, 9, 40, 125, 936, 5047, 42848, 367929, 3668500, 39916811, 480577032, 6227020813, 87197480384, 1307761815375, 20923593490816, 355687428096017, 6402405005606628, 121645100408832019, 2432903231908929800, 51090944698284691221, 1124000756238680570272
Offset: 1
-
a(n) = n!*sumdiv(n, d, 1/((d-1)!*(n/d)!^(d-1)));
-
my(N=30, x='x+O('x^N)); Vec(serlaplace(sum(k=1, N, x^k*exp(x^k/k!))))
A370602
a(n) = n! * Sum_{d|n} 1/((d-1)! * (n/d)^(d-1)).
Original entry on oeis.org
1, 4, 9, 40, 125, 1056, 5047, 51248, 383049, 4364020, 39916811, 576885552, 6227020813, 99634224704, 1334500527375, 23592657488416, 355687428096017, 7202890599354468, 121645100408832019, 2679832071577681040, 51612375654647808021, 1226182612423511392672
Offset: 1
-
a(n) = n!*sumdiv(n, d, 1/((d-1)!*(n/d)^(d-1)));
-
my(N=30, x='x+O('x^N)); Vec(serlaplace(sum(k=1, N, x^k*exp(x^k/k))))
A370581
a(n) = n! * Sum_{d|n} d/(d! * (n/d)!).
Original entry on oeis.org
1, 3, 4, 17, 6, 307, 8, 5049, 30250, 105851, 12, 25945933, 14, 77837775, 14529715216, 147891744017, 18, 13435316294419, 20, 7606841430988821, 16895152834560022, 183030822374423, 24, 387276381308571955225, 5385836820601036800026, 485735643993600027
Offset: 1
-
a(n) = n!*sumdiv(n, d, d/(d!*(n/d)!));
-
my(N=30, x='x+O('x^N)); Vec(serlaplace(sum(k=1, N, x^k/k!*exp(x^k))))
Showing 1-4 of 4 results.