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A094157 Bisection of A000940. 1
2, 12, 202, 9468, 836017, 111255228, 20433309147, 4940118795869, 1520564059349452, 580578894859915650, 269291841184184374868, 149146250420586942401004, 97222048664558428304285193, 73681349947834075264704425280, 64240926985765124116695616020874, 63847923667734462963941294951243328 (list; graph; refs; listen; history; internal format)
OFFSET

2,1

REFERENCES

S. W. Golomb and L. R. Welch, On the enumeration of polygons, Amer. Math. Monthly, 67 (1960), 349-353.

CROSSREFS

Sequence in context: A015195 A051421 A110105 * A012598 A156489 A129893

Adjacent sequences:  A094154 A094155 A094156 * A094158 A094159 A094160

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), May 05 2004

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Last modified February 14 05:35 EST 2012. Contains 205570 sequences.