A261235 First differences of A261234.

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

Links

Table of n, a(n) for n=0..35.

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

Adjacent sequences: A261232 A261233 A261234 * A261236 A261237 A261238

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