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A003177 Ceiling of 24(2^n-1)/n. 3
24, 36, 56, 90, 149, 252, 436, 765, 1363, 2456, 4467, 8190, 15122, 28086, 52428, 98303, 185042, 349524, 662258, 1258290, 2396744, 4575604, 8753330, 16777215, 32212254, 61946643, 119304647, 230087533 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

R. J. Penrose, Twistor Newsletter, No. 41, p. 22, 1996.

CROSSREFS

Cf. A003176, A003138, A121056.

Sequence in context: A143645 A003176 A003138 * A038530 A179152 A193069

Adjacent sequences:  A003174 A003175 A003176 * A003178 A003179 A003180

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 16 14:07 EST 2012. Contains 205930 sequences.