OFFSET
1,4
COMMENTS
Inspired by an X (or Twitter) post by Matt Henderson (see links section).
This is A364828 without the outer circle.
LINKS
Matt Henderson, X post, 2023.
Paolo Xausa, Illustration of first terms.
Paolo Xausa, Illustration of a(60).
FORMULA
CROSSREFS
KEYWORD
nonn
AUTHOR
Paolo Xausa, Aug 09 2023
STATUS
approved