A082981 - cp's OEIS frontend

A082981 Start with the sequence S(0)={1,1} and for k>0 define S(k) to be I(S(k-1)) where I denotes the operation of inserting, for i=1,2,3..., the term a(i)+a(i+1) between any two terms for which 4a(i+1)<=5a(i). The listed terms are the initial terms of the limit of this process as k goes to infinity.

n	a(n)
1	1
2	2
3	3
4	4
5	9
6	14
7	19
8	24
9	53
10	82
11	111
12	140
13	309
14	478
15	647
16	816
17	1801
18	2786
19	3771
20	4756
21	10497
22	16238
23	21979
24	27720
25	61181
26	94642
27	128103
28	161564
29	356589
30	551614
31	746639
32	941664
33	2078353
34	3215042
35	4351731
36	5488420
37	12113529
38	18738638
39	25363747

[1, 2, 3, 4, 9, 14, 19, 24, 53, 82, 111, 140, 309, 478, 647, 816, 1801, 2786, 3771, 4756, 10497, 16238, 21979, 27720, 61181, 94642, 128103, 161564, 356589, 551614, 746639, 941664, 2078353, 3215042, 4351731, 5488420, 12113529, 18738638, 25363747]

cp's OEIS Frontend

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