A130045 - cp's OEIS frontend

A130045 Denominator of polynomial a[1]=1, a[2]->1+1/(xa[1]), a[3]->1+1/(2xa[2]), a[4]->1+1/(3xa[3]),.. giving 1,(1+x)/x,(3+2x)/(2(1+x)),(2+11x+6x^2)/(3x(3+2x)), .. at x-> -1. Absolute values are equal to A067078(n)/n.

n	a(n)
1	1
2	1
3	4
4	-9
5	-20
6	55
7	210
8	-1085
9	-7000
10	53235
11	462350
12	-4500265
13	-48454980
14	571411295
15	7321388410
16	-101249656725
17	-1502852293040
18	23827244817355
19	401839065437670
20	-7182224591785985
21	-135607710526966300
22	2696935204638786615
23	56349204870460046930
24	-1234002202313888987245

[1, 1, 4, -9, -20, 55, 210, -1085, -7000, 53235, 462350, -4500265, -48454980, 571411295, 7321388410, -101249656725, -1502852293040, 23827244817355, 401839065437670, -7182224591785985, -135607710526966300, 2696935204638786615, 56349204870460046930, -1234002202313888987245]

cp's OEIS Frontend

A130045 Denominator of polynomial a[1]=1, a[2]->1+1/(xa[1]), a[3]->1+1/(2xa[2]), a[4]->1+1/(3xa[3]),.. giving 1,(1+x)/x,(3+2x)/(2(1+x)),(2+11x+6x^2)/(3x(3+2x)), .. at x-> -1. Absolute values are equal to A067078(n)/n.

Table of values

List of values

cp's OEIS Frontend

A130045 Denominator of polynomial a[1]=1, a[2]->1+1/(x*a[1]), a[3]->1+1/(2*x*a[2]), a[4]->1+1/(3*x*a[3]),.. giving 1,(1+x)/x,(3+2*x)/(2*(1+x)),(2+11*x+6*x^2)/(3*x*(3+2*x)), .. at x-> -1. Absolute values are equal to A067078(n)/n.

Table of values

List of values

A130045 Denominator of polynomial a[1]=1, a[2]->1+1/(xa[1]), a[3]->1+1/(2xa[2]), a[4]->1+1/(3xa[3]),.. giving 1,(1+x)/x,(3+2x)/(2(1+x)),(2+11x+6x^2)/(3x(3+2x)), .. at x-> -1. Absolute values are equal to A067078(n)/n.