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.

A081618 Numbers n such that (product of first n primes)+1 is divisible by the (n+1)-th prime. Also n such that A075306(n)-1 is equal to A002110(n). Positions of 1 in A081617.

Table of values

n a(n)
1 1
2 7
3 232
4 430

List of values

[1, 7, 232, 430]

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

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