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 A230453 Number of terms in the "comma sum" sequence (cf. A230288) starting with n, or 0 if it is infinite. 3
 2, 1, 1, 1, 1, 122, 121, 121, 120, 120, 122, 121, 121, 120, 120, 120, 120, 119, 118, 119, 120, 120, 119, 118, 119, 118, 118, 117, 117, 117, 118, 118, 117, 117, 117, 117, 116, 116, 116, 116, 117, 116, 116, 116, 116, 115, 115, 4, 115, 4, 115, 115, 4, 115, 4, 114, 114, 114, 114, 3, 114, 114, 114, 114, 3, 3, 113, 3, 113, 2, 3, 113, 3, 113 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS A "comma sum" sequence is such that a(n+1)-a(n) = rightmost digit of a(n) + leftmost digit of a(n+1), taking usually the smallest possible solution. The value a(0)=2 corresponds to the sequence (0,1), not to sequence A230288 starting by definition with 0,5,.... a(n)>0 for all n<396. See A230450 for the sequence starting with 396. LINKS PROG (PARI) for(n=0, 196, print1(#A230288_list([n], 150), ", ")) \\ The second argument (nMax) is useful only for n>= 396. If this value (here 150) is printed, this most probably means that the sequence is infinite, a(n)=0. CROSSREFS Cf. A230288, A230450, A230452. Sequence in context: A176250 A248975 A016541 * A098876 A143277 A292378 Adjacent sequences:  A230450 A230451 A230452 * A230454 A230455 A230456 KEYWORD nonn,base AUTHOR M. F. Hasler, Oct 19 2013 STATUS approved

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Last modified July 25 16:39 EDT 2021. Contains 346291 sequences. (Running on oeis4.)