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.

A215641 Smallest prime whose decimal expansion consists of the concatenation of a 1-digit prime, a 2-digit prime, a 3-digit prime, ..., and an n-digit prime.

Table of values

n a(n)
1 2
2 211
3 211151
4 2111011129
5 211101100910009
6 211101100910007100049
7 2111011009100071000031000453
8 211101100910007100003100000310000721
9 211101100910007100003100000310000019100000543
10 2111011009100071000031000003100000191000000071000000531

List of values

[2, 211, 211151, 2111011129, 211101100910009, 211101100910007100049, 2111011009100071000031000453, 211101100910007100003100000310000721, 211101100910007100003100000310000019100000543, 2111011009100071000031000003100000191000000071000000531]

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

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