A093850 - cp's OEIS frontend

A093850 Triangle T(n,k) = 10^(n-1) -1 + kfloor(910^(n-1)/(n+1)), with 1 <= r <= n, read by rows.

n	a(n)
1	4
2	39
3	69
4	324
5	549
6	774
7	2799
8	4599
9	6399
10	8199
11	24999
12	39999
13	54999
14	69999
15	84999
16	228570
17	357141
18	485712
19	614283
20	742854
21	871425
22	2124999
23	3249999
24	4374999
25	5499999
26	6624999
27	7749999
28	8874999
29	19999999
30	29999999
31	39999999
32	49999999
33	59999999
34	69999999
35	79999999
36	89999999

[4, 39, 69, 324, 549, 774, 2799, 4599, 6399, 8199, 24999, 39999, 54999, 69999, 84999, 228570, 357141, 485712, 614283, 742854, 871425, 2124999, 3249999, 4374999, 5499999, 6624999, 7749999, 8874999, 19999999, 29999999, 39999999, 49999999, 59999999, 69999999, 79999999, 89999999]

cp's OEIS Frontend

A093850 Triangle T(n,k) = 10^(n-1) -1 + kfloor(910^(n-1)/(n+1)), with 1 <= r <= n, read by rows.

Table of values

List of values

cp's OEIS Frontend

A093850 Triangle T(n,k) = 10^(n-1) -1 + k*floor(9*10^(n-1)/(n+1)), with 1 <= r <= n, read by rows.

Table of values

List of values

A093850 Triangle T(n,k) = 10^(n-1) -1 + kfloor(910^(n-1)/(n+1)), with 1 <= r <= n, read by rows.