A376134 - cp's OEIS frontend

A376134 a(0) = 1; a(n) = Sum_{k=0..n-1} (-1)^k * (k+1) * a(k) * a(n-k-1).

n	a(n)
0	1
1	1
2	-1
3	-6
4	17
5	141
6	-660
7	-6688
8	43837
9	521755
10	-4412893
11	-60477282
12	628119268
13	9772644140
14	-120524236108
15	-2103803950976
16	30068650440341
17	582807287964375
18	-9477098158324107
19	-202143447363632090
20	3686281848172281145
21	85853256990102196221
22	-1735552985238117874788

[1, 1, -1, -6, 17, 141, -660, -6688, 43837, 521755, -4412893, -60477282, 628119268, 9772644140, -120524236108, -2103803950976, 30068650440341, 582807287964375, -9477098158324107, -202143447363632090, 3686281848172281145, 85853256990102196221, -1735552985238117874788]

cp's OEIS Frontend

A376134 a(0) = 1; a(n) = Sum_{k=0..n-1} (-1)^k * (k+1) * a(k) * a(n-k-1).

Table of values

List of values