A080896 - cp's OEIS frontend

A080896 Expansion of the exponential series exp( x * T(x) ) = exp( x / sqrt(1 - 2x - 3x^2) ), where T(x) is the ordinary generating series of the central trinomial coefficients (A002426).

n	a(n)
0	1
1	1
2	3
3	25
4	265
5	3741
6	64051
7	1298053
8	30295665
9	800411545
10	23601417571
11	768200763441
12	27352316065273
13	1057402991121205
14	44102326806885075
15	1973793512480683741
16	94345589402816289121
17	4796647490592139950513

[1, 1, 3, 25, 265, 3741, 64051, 1298053, 30295665, 800411545, 23601417571, 768200763441, 27352316065273, 1057402991121205, 44102326806885075, 1973793512480683741, 94345589402816289121, 4796647490592139950513]

cp's OEIS Frontend

A080896 Expansion of the exponential series exp( x * T(x) ) = exp( x / sqrt(1 - 2x - 3x^2) ), where T(x) is the ordinary generating series of the central trinomial coefficients (A002426).

Table of values

List of values

cp's OEIS Frontend

A080896 Expansion of the exponential series exp( x * T(x) ) = exp( x / sqrt(1 - 2*x - 3*x^2) ), where T(x) is the ordinary generating series of the central trinomial coefficients (A002426).

Table of values

List of values

A080896 Expansion of the exponential series exp( x * T(x) ) = exp( x / sqrt(1 - 2x - 3x^2) ), where T(x) is the ordinary generating series of the central trinomial coefficients (A002426).