A179167 - cp's OEIS frontend

A179167 Place a(n) red and b(n) blue balls in an urn; draw 3 balls without replacement; Probability(3 red balls) = Probability(1 red and 2 blue balls); binomial(a(n),3) = binomial(a(n),1)*binomial(b(n),2).

n	a(n)
1	3
2	4
3	11
4	37
5	134
6	496
7	1847
8	6889
9	25706
10	95932
11	358019
12	1336141
13	4986542
14	18610024
15	69453551
16	259204177
17	967363154
18	3610248436
19	13473630587
20	50284273909
21	187663465046
22	700369586272
23	2613814880039
24	9754889933881

[3, 4, 11, 37, 134, 496, 1847, 6889, 25706, 95932, 358019, 1336141, 4986542, 18610024, 69453551, 259204177, 967363154, 3610248436, 13473630587, 50284273909, 187663465046, 700369586272, 2613814880039, 9754889933881]

cp's OEIS Frontend

A179167 Place a(n) red and b(n) blue balls in an urn; draw 3 balls without replacement; Probability(3 red balls) = Probability(1 red and 2 blue balls); binomial(a(n),3) = binomial(a(n),1)*binomial(b(n),2).

Table of values

List of values