A341896 - cp's OEIS frontend

A341896 a(n) is the number of words of length n over the alphabet {a,b,c} with an even number of appearances of the letter 'a' and the sum of appearances of the letters 'b' and 'c' add up to at most 3.

n	a(n)
0	1
1	2
2	5
3	14
4	25
5	90
6	61
7	294
8	113
9	690
10	181
11	1342
12	265
13	2314
14	365
15	3670
16	481
17	5474
18	613
19	7790
20	761
21	10682
22	925
23	14214
24	1105
25	18450
26	1301
27	23454
28	1513
29	29290
30	1741
31	36022
32	1985
33	43714
34	2245
35	52430
36	2521
37	62234
38	2813
39	73190
40	3121
41	85362
42	3445
43	98814
44	3785
45	113610

[1, 2, 5, 14, 25, 90, 61, 294, 113, 690, 181, 1342, 265, 2314, 365, 3670, 481, 5474, 613, 7790, 761, 10682, 925, 14214, 1105, 18450, 1301, 23454, 1513, 29290, 1741, 36022, 1985, 43714, 2245, 52430, 2521, 62234, 2813, 73190, 3121, 85362, 3445, 98814, 3785, 113610]

cp's OEIS Frontend

A341896 a(n) is the number of words of length n over the alphabet {a,b,c} with an even number of appearances of the letter 'a' and the sum of appearances of the letters 'b' and 'c' add up to at most 3.

Table of values

List of values