A162460 - OEIS

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A162460

First differences of A161762.

0, 2, 2, 7, 14, 37, 90, 232, 594, 1541, 4004, 10441, 27260, 71254, 186354, 487579, 1276002, 3339821, 8742470, 22885996, 59912930, 156848617, 410626152, 1075018897, 2814412824, 7368190922, 19290113570, 50502074767, 132215989334, 346145696821, 906220783314 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`a(n)=A161762(n+1)-A161762(n).` `a(n)=A000217(A000045(n+1))+A000217(A000045(n-1)-1)-A000290(A000045(n)). - R. J. Mathar, Jul 06 2009`
	EXAMPLE	`a(1)=0=1-1. a(2)=2=3-1. a(3)=2=5-3. a(4)=7=12-5. a(5)=14=26-12. a(6)=37=63-26.`
	MAPLE	`A000217 := proc(n) n*(n+1)/2 ; end:` `A000045 := proc(n) combinat[fibonacci](n) ; end:` `A162460 := proc(n) A161762(n+1)-A161762(n) ; end:` `A161762 := proc(n) A000217(A000045(n))-A000217( A000045(n-1)-1) ; end: seq(A162460(n), n=1..80) ; # R. J. Mathar, Jul 06 2009`
	CROSSREFS	`Cf. A000045, A161762.` `Sequence in context: A019144 A049953 A156435 * A187306 A061274 A061575` `Adjacent sequences: A162457 A162458 A162459 * A162461 A162462 A162463`
	KEYWORD	`nonn`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jul 04 2009`
	EXTENSIONS	`a(21) corrected by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 05 2009`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.