A301877 - cp's OEIS frontend

A301877 Group the natural numbers into groups (1),(2),(3),(4),(5,6),(7,8,9),... so that the n-th group contains N(n) terms, where N(n) is the Narayana's cows sequence (A000930). Sequence contains the sum of the terms in the n-th group.

n	a(n)
1	1
2	2
3	3
4	4
5	11
6	24
7	46
8	99
9	216
10	455
11	969
12	2086
13	4469
14	9570
15	20548
16	44118
17	94689
18	203318
19	436653
20	937720
21	2013884
22	4325391
23	9290080
24	19953405
25	42857019
26	92051300
27	197714721
28	424668244
29	912140480
30	1959179226
31	4208109535
32	9038581200
33	19413940167
34	41699153408
35	89565528714
36	192377651011
37	413207678264

[1, 2, 3, 4, 11, 24, 46, 99, 216, 455, 969, 2086, 4469, 9570, 20548, 44118, 94689, 203318, 436653, 937720, 2013884, 4325391, 9290080, 19953405, 42857019, 92051300, 197714721, 424668244, 912140480, 1959179226, 4208109535, 9038581200, 19413940167, 41699153408, 89565528714, 192377651011, 413207678264]

cp's OEIS Frontend

A301877 Group the natural numbers into groups (1),(2),(3),(4),(5,6),(7,8,9),... so that the n-th group contains N(n) terms, where N(n) is the Narayana's cows sequence (A000930). Sequence contains the sum of the terms in the n-th group.

Table of values

List of values