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A342271 A161645(n)/3. 1
1, 2, 2, 2, 4, 6, 4, 2, 4, 8, 10, 8, 10, 14, 8, 2, 4, 8, 10, 10, 14, 22, 22, 12, 10, 20, 28, 24, 26, 32, 16, 2, 4, 8, 10, 10, 14, 22, 22, 14, 14, 26, 38, 38, 38, 50, 46, 20, 10, 20, 28, 30, 38, 58, 66, 44, 30, 48, 70, 64, 64, 70, 32, 2, 4, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

REFERENCES

S. Ulam, On some mathematical problems connected with patterns of growth of figures, pp. 215-224 of R. E. Bellman, ed., Mathematical Problems in the Biological Sciences, Proc. Sympos. Applied Math., Vol. 14, Amer. Math. Soc., 1962. See Example 3.

LINKS

Table of n, a(n) for n=2..67.

CROSSREFS

Cf. A161644, A161645, A182634, A139250.

Sequence in context: A278231 A152968 A222177 * A240433 A217637 A231515

Adjacent sequences:  A342268 A342269 A342270 * A342272 A342273 A342274

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 11 2021

STATUS

approved

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Last modified July 31 06:15 EDT 2021. Contains 346369 sequences. (Running on oeis4.)