A336670 - cp's OEIS frontend

A336670 Numbers that have decimal expansion c(1)c(2)...c(n) with distinct digits that satisfy c(1) <> 0, c(1) is the largest digit, and for each i in 1..n there is j in {0, 1} such that c(i) == 2*c(i-1) + j (mod 10) (with c(0): = c(n)).

n	a(n)
1	0
2	9
3	63
4	512
5	874
6	5012
7	7513
8	8624
9	9874
10	62513
11	75013
12	86374
13	98624
14	625013
15	875124
16	986374
17	8750124
18	9875124
19	86251374
20	86375124
21	87513624
22	98750124
23	862501374
24	863750124
25	875013624
26	986251374
27	986375124
28	987513624
29	9862501374
30	9863750124
31	9875013624

[0, 9, 63, 512, 874, 5012, 7513, 8624, 9874, 62513, 75013, 86374, 98624, 625013, 875124, 986374, 8750124, 9875124, 86251374, 86375124, 87513624, 98750124, 862501374, 863750124, 875013624, 986251374, 986375124, 987513624, 9862501374, 9863750124, 9875013624]

cp's OEIS Frontend

A336670 Numbers that have decimal expansion c(1)c(2)...c(n) with distinct digits that satisfy c(1) <> 0, c(1) is the largest digit, and for each i in 1..n there is j in {0, 1} such that c(i) == 2*c(i-1) + j (mod 10) (with c(0): = c(n)).

Table of values

List of values