id:A154633 - OEIS Search Results

Search: id:A154633

Displaying 1-1 of 1 results found.

page 1

(4n+1)(4n+3)(4n+5)(4n+7)

+0
3

105, 3465, 19305, 62985, 156009, 326025, 606825, 1038345, 1666665, 2544009, 3728745, 5285385, 7284585, 9803145, 12924009, 16736265, 21335145, 26822025, 33304425, 40896009, 49716585, 59892105, 71554665, 84842505, 99900009 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Sum_{n>=0} 1/a(n) = (3Pi-8)/144` `3 divides a(n).`
	FORMULA	`G.f.: 3(35+980x+1010x^2+20x^3+3*x^4)/(1-x)^5` `a(n)=(4n+1)(4n+3)(4n+5)(4n+7)` `a(n)=5a(n-1)-10a(n-2)+10a(n-3)-5a(n-4)+a(n-5)`
	CROSSREFS	`Cf. A133766, A001539, A157142.` `Sequence in context: A112497 A166821 A166803 this_sequence A122814 A112490 A006361` `Adjacent sequences: A154630 A154631 A154632 this_sequence A154634 A154635 A154636`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Jan 13 2009`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research