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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.

A377029 a(1) = 0; thereafter in the binary expansion of a(n-1), expand bits: 1->01 and 0->10.

Table of values

n a(n)
1 0
2 2
3 6
4 22
5 406
6 92566
7 6818458006
8 26055178074437806486
9 540213899028732737068658940860686756246
10 163551003506862550406254063077517364557434408527734307437037618419534882498966

List of values

[0, 2, 6, 22, 406, 92566, 6818458006, 26055178074437806486, 540213899028732737068658940860686756246, 163551003506862550406254063077517364557434408527734307437037618419534882498966]

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

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