A060985 - cp's OEIS frontend

A060985 a(1) = 1; a(n+1) = a(n) + (largest triangular number <= a(n)).

n	a(n)
1	1
2	2
3	3
4	6
5	12
6	22
7	43
8	79
9	157
10	310
11	610
12	1205
13	2381
14	4727
15	9383
16	18699
17	37227
18	74355
19	148660
20	296900
21	593735
22	1187240
23	2373810
24	4746741
25	9491481
26	18981027
27	37956907
28	75910735
29	151820416
30	303627016
31	607253419
32	1214497244
33	2428978214
34	4857918665

[1, 2, 3, 6, 12, 22, 43, 79, 157, 310, 610, 1205, 2381, 4727, 9383, 18699, 37227, 74355, 148660, 296900, 593735, 1187240, 2373810, 4746741, 9491481, 18981027, 37956907, 75910735, 151820416, 303627016, 607253419, 1214497244, 2428978214, 4857918665]

cp's OEIS Frontend

A060985 a(1) = 1; a(n+1) = a(n) + (largest triangular number <= a(n)).

Table of values

List of values