A320546 - cp's OEIS frontend

A320546 Number of partitions of n into parts of exactly four sorts which are introduced in ascending order such that sorts of adjacent parts are different.

n	a(n)
4	1
5	7
6	33
7	130
8	464
9	1558
10	5039
11	15886
12	49282
13	151165
14	460352
15	1394863
16	4212752
17	12694566
18	38197710
19	114820403
20	344919283
21	1035670246
22	3108844526
23	9330186438
24	27997888759
25	84008273161
26	252054096569
27	756220672185
28	2268778953179
29	6806570182252
30	20420177671614

[1, 7, 33, 130, 464, 1558, 5039, 15886, 49282, 151165, 460352, 1394863, 4212752, 12694566, 38197710, 114820403, 344919283, 1035670246, 3108844526, 9330186438, 27997888759, 84008273161, 252054096569, 756220672185, 2268778953179, 6806570182252, 20420177671614]

cp's OEIS Frontend

A320546 Number of partitions of n into parts of exactly four sorts which are introduced in ascending order such that sorts of adjacent parts are different.

Table of values

List of values