A155750 - OEIS

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A155750

First differences of A031215.

4, 6, 6, 10, 8, 6, 10, 8, 10, 8, 10, 12, 6, 6, 18, 8, 12, 12, 10, 8, 12, 6, 24, 6, 10, 12, 12, 8, 10, 12, 18, 6, 20, 12, 10, 14, 10, 14, 12, 12, 12, 10, 14, 6, 16, 12, 12, 18, 20, 16, 12, 8, 16, 8, 12, 6, 22, 6, 12, 14, 10, 18, 18, 14, 10, 14, 12, 18, 22, 12, 6, 12, 18, 6, 18, 6, 24 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`All terms are even. Do all even numbers (A005843) appear at least once?`
	FORMULA	`a(n)= A001223(2n)+A001223(2n+1). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 27 2009` `a(n)= A031131(2n). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 27 2009`
	CROSSREFS	`Cf. A110854, A155067.` `Sequence in context: A199172 A183986 A160995 * A159475 A098350 A163173` `Adjacent sequences: A155747 A155748 A155749 * A155751 A155752 A155753`
	KEYWORD	`nonn,easy`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Jan 26 2009`
	EXTENSIONS	`Edited and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 27 2009`

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