A090853 - cp's OEIS frontend

A090853 a(n) is the least positive integer such that the arithmetic-geometric mean satisfies: floor( agm(a(n),a(n-2)) ) = a(n-1) for n>2, with a(1)=1, a(2)=2.

n	a(n)
1	1
2	2
3	4
4	7
5	12
6	19
7	28
8	40
9	55
10	73
11	94
12	118
13	145
14	176
15	211
16	250
17	293
18	340
19	391
20	446
21	505
22	568
23	635
24	706
25	781
26	860
27	943
28	1030
29	1121
30	1216
31	1315
32	1418
33	1525
34	1637
35	1754
36	1876
37	2003
38	2135
39	2272
40	2414
41	2561
42	2713
43	2870
44	3032
45	3199
46	3371
47	3548
48	3730
49	3917
50	4109

[1, 2, 4, 7, 12, 19, 28, 40, 55, 73, 94, 118, 145, 176, 211, 250, 293, 340, 391, 446, 505, 568, 635, 706, 781, 860, 943, 1030, 1121, 1216, 1315, 1418, 1525, 1637, 1754, 1876, 2003, 2135, 2272, 2414, 2561, 2713, 2870, 3032, 3199, 3371, 3548, 3730, 3917, 4109]

cp's OEIS Frontend

A090853 a(n) is the least positive integer such that the arithmetic-geometric mean satisfies: floor( agm(a(n),a(n-2)) ) = a(n-1) for n>2, with a(1)=1, a(2)=2.

Table of values

List of values