A328348 - cp's OEIS frontend

A328348 Let S be any integer in the range 3 <= S <= 17. Sequence has the property that a(n)*S is the sum of all positive integers whose decimal expansion has <= n digits and contains at most two distinct nonzero digits p and q such that p+q=S.

n	a(n)
0	0
1	1
2	23
3	467
4	9355
5	187131
6	3742683
7	74853787
8	1497075995
9	29941520411
10	598830409243
11	11976608186907
12	239532163742235
13	4790643274852891
14	95812865497074203
15	1916257309941516827
16	38325146198830402075
17	766502923976608172571
18	15330058479532163713563
19	306601169590643274795547

[0, 1, 23, 467, 9355, 187131, 3742683, 74853787, 1497075995, 29941520411, 598830409243, 11976608186907, 239532163742235, 4790643274852891, 95812865497074203, 1916257309941516827, 38325146198830402075, 766502923976608172571, 15330058479532163713563, 306601169590643274795547]

cp's OEIS Frontend

A328348 Let S be any integer in the range 3 <= S <= 17. Sequence has the property that a(n)*S is the sum of all positive integers whose decimal expansion has <= n digits and contains at most two distinct nonzero digits p and q such that p+q=S.

Table of values

List of values