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.

A180245 n-th natural number m such that m and m+2 are both divisible by exactly n primes (counted with multiplicity).

Table of values

n a(n)
1 3
2 33
3 42
4 196
5 918
6 6640
7 24750
8 246078
9 781248
10 6565374
11 25227774
12 165009150
13 673932798
14 5268548608
15 25737162750
16 179511912448
17 818179991550
18 4228689854464
19 26455088693248
20 104384041582590
21 820632501420030

List of values

[3, 33, 42, 196, 918, 6640, 24750, 246078, 781248, 6565374, 25227774, 165009150, 673932798, 5268548608, 25737162750, 179511912448, 818179991550, 4228689854464, 26455088693248, 104384041582590, 820632501420030]

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

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