A309105 - cp's OEIS frontend

A309105 a(n) = Sum_{k >= 0} floor(n^(2k) / (2k)!).

n	a(n)
0	1
1	1
2	3
3	9
4	25
5	71
6	198
7	543
8	1486
9	4045
10	11007
11	29931
12	81371
13	221197
14	601294
15	1634497
16	4443046
17	12077467
18	32829975
19	89241140
20	242582583
21	659407855
22	1792456409
23	4872401706
24	13244561047
25	36002449653
26	97864804698
27	266024120284
28	723128532126
29	1965667148553

[1, 1, 3, 9, 25, 71, 198, 543, 1486, 4045, 11007, 29931, 81371, 221197, 601294, 1634497, 4443046, 12077467, 32829975, 89241140, 242582583, 659407855, 1792456409, 4872401706, 13244561047, 36002449653, 97864804698, 266024120284, 723128532126, 1965667148553]

cp's OEIS Frontend

A309105 a(n) = Sum_{k >= 0} floor(n^(2k) / (2k)!).

Table of values

List of values

cp's OEIS Frontend

A309105 a(n) = Sum_{k >= 0} floor(n^(2*k) / (2*k)!).

Table of values

List of values

A309105 a(n) = Sum_{k >= 0} floor(n^(2k) / (2k)!).