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A261235
First differences of A261234.
3
1, 3, 7, 17, 45, 122, 334, 915, 2511, 6906, 19039, 52691, 146641, 410734, 1157321, 3276419, 9307640, 26509145, 75669108, 216483760, 620847130, 1784898316, 5143127022, 14847548759, 42923323624, 124213679008, 359730306331, 1042521363580, 3023562595587, 8776718908896, 25502164336020, 74179903571807, 216005883269160, 629644927525768, 1837129499003121, 5364782084798156
OFFSET
0,2
FORMULA
a(n) = A261234(n+1) - A261234(n).
PROG
(Scheme) (define (A261235 n) (- (A261234 (+ 1 n)) (A261234 n)))
CROSSREFS
Cf. A261234.
Cf. also A226060.
Sequence in context: A018026 A087953 A210839 * A211281 A233656 A106191
KEYWORD
nonn
AUTHOR
Antti Karttunen, Aug 13 2015
EXTENSIONS
Terms from a(23) onward computed from the output of Hiroaki Yamanouchi's program (given in A261234) by Antti Karttunen, Aug 16 2015
STATUS
approved