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.

A138833 Concatenation of n-th perfect number and n-th Mersenne prime A000668(n).

Table of values

n a(n)
1 63
2 287
3 49631
4 8128127
5 335503368191
6 8589869056131071
7 137438691328524287
8 23058430081399521282147483647
9 26584559915698317446546926159538421762305843009213693951
10 191561942608236107294793378084303638130997321548169216618970019642690137449562111

List of values

[63, 287, 49631, 8128127, 335503368191, 8589869056131071, 137438691328524287, 23058430081399521282147483647, 26584559915698317446546926159538421762305843009213693951, 191561942608236107294793378084303638130997321548169216618970019642690137449562111]

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

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