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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.

A013720 a(n) = 15^(2*n + 1).

Table of values

n a(n)
0 15
1 3375
2 759375
3 170859375
4 38443359375
5 8649755859375
6 1946195068359375
7 437893890380859375
8 98526125335693359375
9 22168378200531005859375
10 4987885095119476318359375
11 1122274146401882171630859375

List of values

[15, 3375, 759375, 170859375, 38443359375, 8649755859375, 1946195068359375, 437893890380859375, 98526125335693359375, 22168378200531005859375, 4987885095119476318359375, 1122274146401882171630859375]

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

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