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A261410 Curvatures in a certain orthoplicial Apollonian sphere packing. 2
-7, 12, 17, 20, 22, 24, 25, 29, 30, 33, 34, 37, 38, 40, 41, 44, 46, 48, 49, 50, 52, 53, 54, 56, 58, 60, 61, 62, 64, 65, 66, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The sequence begins:

-7, 12, 17, 20, 22, 24, 25, 29, 30, 33, 34, 37, 38, 40, 41, 44, 46,

48, 49, 50, 52, 53, 54, 56, 58, 60, 61, 62, 64, 65, 66, 68, 69, ...,

200, 201, 202, 204, 205, 206, 208, 209, 210, 212, 213, 214, 216,

217, 218, 220, 221, 222, 224, 225, 226, 228, 229, 230, 232, 233,

234, 236, 237, 238, 240, 241, 242, 244, 245, 246, 248, 249, ...

LINKS

Table of n, a(n) for n=1..64.

Dimitri Dias, The local-global principle for integral generalized Apollonian sphere packings, arXiv:1401.4789, 2014.

Kei Nakamura, The local-global principle for integral bends in orthoplicial Apollonian sphere packings, arXiv:1401.2980, 2014.

CROSSREFS

Cf. A261409.

Sequence in context: A295625 A063303 A091215 * A090067 A072354 A091576

Adjacent sequences:  A261407 A261408 A261409 * A261411 A261412 A261413

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Aug 23 2015

STATUS

approved

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Last modified September 19 19:41 EDT 2021. Contains 347564 sequences. (Running on oeis4.)