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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.

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A377928 The indices k where A377015(k) = 1.

Original entry on oeis.org

1, 2039, 2703, 30083, 32155, 32437, 86925, 292101, 339137, 430611, 669371, 670563, 727051, 1161819, 1534325, 1541819, 1543011, 2027935, 2718001, 3266661, 3273829, 3730467, 4805861, 4806143, 5534871, 6371063, 7834735, 8926025, 9293575, 9664815, 12629449, 13645059, 13645723, 16510691, 19947389, 19952425, 22519739, 22520381, 24820941, 26657853, 26658495
Offset: 1

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Author

Scott R. Shannon, Nov 11 2024

Keywords

Comments

These are the indices where a knight moving on a square spiral revisits the origin using the path rules given in A377015. See that sequence for further details.

Crossrefs

Cf. A377015, A316667, A362027, A343678, A358278, A358150, A328929, A328909.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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