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.

A277635 Number of 7's appearing in the sequence of consecutive natural numbers from 1 to A007908(n), where A007908 = (1, 12, 123, 1234, ...).

Table of values

n a(n)
1 0
2 1
3 22
4 343
5 4664
6 58985
7 713307
8 8367637
9 96022049

List of values

[0, 1, 22, 343, 4664, 58985, 713307, 8367637, 96022049]

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

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