A190155 - cp's OEIS frontend

A190155 Central coefficients of the Riordan matrix (g(x),xg(x)), where g(x) = (1-x-x^2-sqrt(1-2x-5x^2+2x^3+x^4))/(2*x^2) (A132276).

n	a(n)
0	1
1	2
2	12
3	64
4	385
5	2346
6	14672
7	92936
8	595179
9	3841970
10	24959726
11	162988464
12	1068860884
13	7034520304
14	46437268905
15	307351081056
16	2038878634695
17	13552394472612
18	90242046694715
19	601847594327000
20	4019556724362165
21	26879647264387170

[1, 2, 12, 64, 385, 2346, 14672, 92936, 595179, 3841970, 24959726, 162988464, 1068860884, 7034520304, 46437268905, 307351081056, 2038878634695, 13552394472612, 90242046694715, 601847594327000, 4019556724362165, 26879647264387170]

cp's OEIS Frontend

A190155 Central coefficients of the Riordan matrix (g(x),xg(x)), where g(x) = (1-x-x^2-sqrt(1-2x-5x^2+2x^3+x^4))/(2*x^2) (A132276).

Table of values

List of values

cp's OEIS Frontend

A190155 Central coefficients of the Riordan matrix (g(x),x*g(x)), where g(x) = (1-x-x^2-sqrt(1-2*x-5*x^2+2*x^3+x^4))/(2*x^2) (A132276).

Table of values

List of values

A190155 Central coefficients of the Riordan matrix (g(x),xg(x)), where g(x) = (1-x-x^2-sqrt(1-2x-5x^2+2x^3+x^4))/(2*x^2) (A132276).