A101901 - cp's OEIS frontend

A101901 Absolute row sums of triangular matrix A101897, in which column k equals column 0 of A101897^k and where the n-th row sums are zero for n>0.

n	a(n)
0	1
1	2
2	4
3	10
4	30
5	110
6	484
7	2514
8	15142
9	104126
10	806772
11	6965090
12	66374766
13	692629618
14	7860173564
15	96428710490
16	1272217776422
17	17968286438066
18	270569090589308
19	4328163151246858
20	73311692500174358
21	1311041890981700358

[1, 2, 4, 10, 30, 110, 484, 2514, 15142, 104126, 806772, 6965090, 66374766, 692629618, 7860173564, 96428710490, 1272217776422, 17968286438066, 270569090589308, 4328163151246858, 73311692500174358, 1311041890981700358]

cp's OEIS Frontend

A101901 Absolute row sums of triangular matrix A101897, in which column k equals column 0 of A101897^k and where the n-th row sums are zero for n>0.

Table of values

List of values