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A003138 Nearest integer to 24(2^n-1)/n. 2
24, 36, 56, 90, 149, 252, 435, 765, 1363, 2455, 4466, 8190, 15122, 28085, 52427, 98303, 185041, 349524, 662257, 1258290, 2396744, 4575603, 8753329, 16777215, 32212254, 61946643, 119304646, 230087533 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

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

LINKS

Z. Sunic, Tree morphisms, transducers and integer sequences

CROSSREFS

Cf. A003176, A003177, A121056.

Sequence in context: A124283 A143645 A003176 * A003177 A038530 A179152

Adjacent sequences:  A003135 A003136 A003137 * A003139 A003140 A003141

KEYWORD

nonn

AUTHOR

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

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Last modified February 15 10:06 EST 2012. Contains 205763 sequences.