A141458 - OEIS

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A141458

A000111(2n)+A000111(2n+1).

2, 3, 21, 333, 9321, 404313, 25071021, 2103118293, 229256855121, 31493764788273, 5321869241361621, 1084772760899990253, 262436014353765070521, 74338674113237083780233, 24371443829213227706941821, 9155506650374192400724494213, 3906927095300068860534174415521 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	FORMULA	`a(2n) == 21 (mod 100), n>0.`
	MAPLE	`A000111 := proc(n) if n = 0 then 1; else 2^nabs(euler(n, 1/2)+euler(n, 1) ); end if; end proc:` `A141458 := proc(n) A000111(2n)+A000111(2*n+1) ; end proc: # R. J. Mathar, Jul 07 2011`
	CROSSREFS	`Sequence in context: A024765 A090122 A114749 * A080670 A073647 A073646` `Adjacent sequences: A141455 A141456 A141457 * A141459 A141460 A141461`
	KEYWORD	`nonn`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Aug 08 2008`

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Last modified February 16 14:37 EST 2012. Contains 205930 sequences.