cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A242622 a(n) = number of numbers with digit sum n, not greater than the n-th repunit (cf. A052222).

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 21
5 77
6 287
7 1079
8 4082
9 15522
10 59271
11 227131
12 873051
13 3364827
14 12998867
15 50321075
16 195162350
17 758156366
18 2949614789
19 11490869489
20 44819531180
21 175009397380
22 684059403670
23 2676260628574
24 10479320689274
25 41065736472890
26 161043272100440
27 631974335773536

List of values

[1, 1, 2, 6, 21, 77, 287, 1079, 4082, 15522, 59271, 227131, 873051, 3364827, 12998867, 50321075, 195162350, 758156366, 2949614789, 11490869489, 44819531180, 175009397380, 684059403670, 2676260628574, 10479320689274, 41065736472890, 161043272100440, 631974335773536]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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