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 A218549 #8 Jun 23 2025 22:17:55 %S A218549 0,1,2,3,4,6,7,10,11,18,20,33,34,35,63,144,170,241 %N A218549 Record values in A213726. %F A218549 a(n) = A213726(A218548(n)). %e A218549 A218548(7)=224, A213726(224)=7 thus a(7)=7 as there are the following seven leaves of beanstalk (i.e. terms of A055938): 233, 234, 235, 238, 245, 250 and 251 that will pass through 224, when an iterative process of x-A000120(x) (see A071542) is applied to them several times. %o A218549 (Scheme) (define (A218549 n) (A213726 (A218548 n))) %Y A218549 Cf. A218550. %K A218549 nonn %O A218549 1,3 %A A218549 _Antti Karttunen_, Nov 04 2012