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.
%I A332059 #11 Dec 23 2024 14:53:46 %S A332059 1,3,4,7,8,10,18,26,33,46,58,68,83,91,107,122,132,146,153,169,187,203, %T A332059 214,232,248,269,280,299,316,334,344,356,373,394,417,437,453,466,486, %U A332059 497,510,517,538,548,566,583,598,609,623 %N A332059 Absolute value of first differences, or sum of digits of the first n terms of A332058. %H A332059 Eric Angelini, <a href="https://web.archive.org/web/*/http://list.seqfan.eu/oldermail/seqfan/2020-February/020508.html">Add or subtract my cumulative sum of digits</a>, SeqFan list, Feb 24 2020. %o A332059 (PARI) A332059_vec(N)=abs((N=A332058_vec(N+1))[^1]-N[^-1]) %Y A332059 See A332057 for the variant corresponding to A332056 instead of A332058. %K A332059 nonn,base %O A332059 1,2 %A A332059 _Eric Angelini_ and _M. F. Hasler_, Feb 25 2020