A330821 - cp's OEIS frontend

A330821 a(1) = 1, a(2) = 2. Thereafter a(n+1) is the smallest number k such that A001414(k) = a(n) + a(n-1).

n	a(n)
1	1
2	2
3	3
4	5
5	15
6	51
7	305
8	1059
9	4083
10	117737
11	3775459
12	19465955
13	952896293
14	13613071346
15	14565967639
16	112716155924
17	11073544747197
18	637616871476643
19	11027737075804991
20	3056322734187753262
21	542921033413649799807
22	8189660342217563295915
23	515222301162241572644117

[1, 2, 3, 5, 15, 51, 305, 1059, 4083, 117737, 3775459, 19465955, 952896293, 13613071346, 14565967639, 112716155924, 11073544747197, 637616871476643, 11027737075804991, 3056322734187753262, 542921033413649799807, 8189660342217563295915, 515222301162241572644117]

cp's OEIS Frontend

A330821 a(1) = 1, a(2) = 2. Thereafter a(n+1) is the smallest number k such that A001414(k) = a(n) + a(n-1).

Table of values

List of values