A355347 - cp's OEIS frontend

A355347 a(n) = binomial(3n+3,n) + binomial(3n+2,n-1) for n >= 0.

n	a(n)
0	1
1	7
2	44
3	275
4	1729
5	10948
6	69768
7	447051
8	2877875
9	18599295
10	120609840
11	784384692
12	5114119724
13	33417386200
14	218786861392
15	1434903854139
16	9425348845815
17	61997934676405
18	408323057257500
19	2692322893972635
20	17770644483690945
21	117406930477134480
22	776363580147660960

[1, 7, 44, 275, 1729, 10948, 69768, 447051, 2877875, 18599295, 120609840, 784384692, 5114119724, 33417386200, 218786861392, 1434903854139, 9425348845815, 61997934676405, 408323057257500, 2692322893972635, 17770644483690945, 117406930477134480, 776363580147660960]

cp's OEIS Frontend

A355347 a(n) = binomial(3n+3,n) + binomial(3n+2,n-1) for n >= 0.

Table of values

List of values

cp's OEIS Frontend

A355347 a(n) = binomial(3*n+3,n) + binomial(3*n+2,n-1) for n >= 0.

Table of values

List of values

A355347 a(n) = binomial(3n+3,n) + binomial(3n+2,n-1) for n >= 0.