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A123117 A063865(4n-3). 2
2, 8, 70, 722, 8220, 99820, 1265204, 16547220, 221653776, 3025553180, 41931984034, 588491482334, 8346638665718, 119447839104366, 1722663727780132, 25011714460877474, 365301750223042066, 5363288299585278800, 79110709437891746598, 1171806326862876802144 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. A063865, A060468. Equals 2*A104456.

Sequence in context: A055547 A113087 A099729 * A062733 A180687 A026739

Adjacent sequences:  A123114 A123115 A123116 * A123118 A123119 A123120

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jul 07 2008

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Last modified February 13 22:29 EST 2012. Contains 205567 sequences.