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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.

A013898 a(n) = 21^(5*n + 1).

Table of values

n a(n)
0 21
1 85766121
2 350277500542221
3 1430568690241985328321
4 5842587018385982521381124421
5 23861715484377209601555171628930521
6 97453656071460446110921078004886769746621
7 398010574215107679422058885600836061208944572721
8 1625515384162495488635310116741260158419511738394408821

List of values

[21, 85766121, 350277500542221, 1430568690241985328321, 5842587018385982521381124421, 23861715484377209601555171628930521, 97453656071460446110921078004886769746621, 398010574215107679422058885600836061208944572721, 1625515384162495488635310116741260158419511738394408821]

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

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