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%I #11 Aug 17 2015 09:49:03
%S 1,3,7,17,45,122,334,915,2511,6906,19039,52691,146641,410734,1157321,
%T 3276419,9307640,26509145,75669108,216483760,620847130,1784898316,
%U 5143127022,14847548759,42923323624,124213679008,359730306331,1042521363580,3023562595587,8776718908896,25502164336020,74179903571807,216005883269160,629644927525768,1837129499003121,5364782084798156
%N First differences of A261234.
%F a(n) = A261234(n+1) - A261234(n).
%o (Scheme) (define (A261235 n) (- (A261234 (+ 1 n)) (A261234 n)))
%Y Cf. A261234.
%Y Cf. also A226060.
%K nonn
%O 0,2
%A _Antti Karttunen_, Aug 13 2015
%E Terms from a(23) onward computed from the output of _Hiroaki Yamanouchi_'s program (given in A261234) by _Antti Karttunen_, Aug 16 2015