A345372 - cp's OEIS frontend

A345372 a(n) = Sum_{i=1..n} nac(i,n) where nac(i,n) is the n-th i-bonacci number. The n-th i-bonacci number here is equal to 1 for the first i terms, with subsequent terms equaling the sum of the previous n terms.

n	a(n)
1	1
2	2
3	4
4	8
5	16
6	31
7	60
8	114
9	217
10	411
11	780
12	1481
13	2820
14	5379
15	10288
16	19720
17	37884
18	72924
19	140640
20	271695
21	525698
22	1018611
23	1976276
24	3838889
25	7465191
26	14531683
27	28313776
28	55214993
29	107762464
30	210477611
31	411387724
32	804609206
33	1574671586
34	3083549861
35	6041628460

[1, 2, 4, 8, 16, 31, 60, 114, 217, 411, 780, 1481, 2820, 5379, 10288, 19720, 37884, 72924, 140640, 271695, 525698, 1018611, 1976276, 3838889, 7465191, 14531683, 28313776, 55214993, 107762464, 210477611, 411387724, 804609206, 1574671586, 3083549861, 6041628460]

cp's OEIS Frontend

A345372 a(n) = Sum_{i=1..n} nac(i,n) where nac(i,n) is the n-th i-bonacci number. The n-th i-bonacci number here is equal to 1 for the first i terms, with subsequent terms equaling the sum of the previous n terms.

Table of values

List of values