A054469 - cp's OEIS frontend

A054469 a(n) = a(n-1) + a(n-2) + (n+2)*binomial(n+3, 3)/2, with a(0) = 1, a(1) = 7.

n	a(n)
0	1
1	7
2	28
3	85
4	218
5	499
6	1053
7	2092
8	3970
9	7272
10	12958
11	22596
12	38739
13	65535
14	109714
15	182185
16	300620
17	493635
18	807555
19	1317360
20	2144396
21	3485032
22	5657028
23	9174560
24	14869613
25	24088399
26	39009168
27	63156437
28	102233030
29	165466347
30	267786673

[1, 7, 28, 85, 218, 499, 1053, 2092, 3970, 7272, 12958, 22596, 38739, 65535, 109714, 182185, 300620, 493635, 807555, 1317360, 2144396, 3485032, 5657028, 9174560, 14869613, 24088399, 39009168, 63156437, 102233030, 165466347, 267786673]

cp's OEIS Frontend

A054469 a(n) = a(n-1) + a(n-2) + (n+2)*binomial(n+3, 3)/2, with a(0) = 1, a(1) = 7.

Table of values

List of values