A377339 - cp's OEIS frontend

A377339 E.g.f. satisfies A(x) = ( 1 + (exp(x*A(x)) - 1)/A(x) )^2.

n	a(n)
0	1
1	2
2	4
3	20
4	144
5	1332
6	15920
7	225332
8	3758272
9	71711540
10	1544139216
11	37040248500
12	979378764320
13	28308318200372
14	887957701803952
15	30043664101434164
16	1090686549233837952
17	42290355849577306932
18	1744321111108101722768
19	76261355010301941319604

[1, 2, 4, 20, 144, 1332, 15920, 225332, 3758272, 71711540, 1544139216, 37040248500, 979378764320, 28308318200372, 887957701803952, 30043664101434164, 1090686549233837952, 42290355849577306932, 1744321111108101722768, 76261355010301941319604]

cp's OEIS Frontend

A377339 E.g.f. satisfies A(x) = ( 1 + (exp(x*A(x)) - 1)/A(x) )^2.

Table of values

List of values