A069835 - cp's OEIS frontend

A069835 Define an array as follows: b(i,0)=b(0,j)=1, b(i,j) = 2*b(i-1,j-1) + b(i-1,j) + b(i,j-1). Then a(n) = b(n,n).

n	a(n)
0	1
1	4
2	22
3	136
4	886
5	5944
6	40636
7	281488
8	1968934
9	13875544
10	98365972
11	700701808
12	5011371964
13	35961808432
14	258805997752
15	1867175631136
16	13500088649734
17	97794850668952
18	709626281415076
19	5157024231645616
20	37528209137458516
21	273431636191026064
22	1994448720786816712

[1, 4, 22, 136, 886, 5944, 40636, 281488, 1968934, 13875544, 98365972, 700701808, 5011371964, 35961808432, 258805997752, 1867175631136, 13500088649734, 97794850668952, 709626281415076, 5157024231645616, 37528209137458516, 273431636191026064, 1994448720786816712]

cp's OEIS Frontend

A069835 Define an array as follows: b(i,0)=b(0,j)=1, b(i,j) = 2*b(i-1,j-1) + b(i-1,j) + b(i,j-1). Then a(n) = b(n,n).

Table of values

List of values