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A144911 Triangle read by rows: rad(n) along left edge (n, 1) and core(n) along right edge (n, n), with (n, k) = core((n - 1, k - 1) + (n - 1, k)) for 1 < k < n when n > 2. 0
1, 2, 2, 3, 1, 3, 2, 1, 1, 1, 5, 3, 2, 2, 5, 6, 2, 5, 1, 7, 6, 7, 2, 7, 6, 2, 13, 7, 2, 1, 1, 13, 2, 15, 5, 2, 3, 3, 2, 14, 15, 17, 5, 7, 1, 10, 6, 5, 1, 29, 2, 22, 3, 2, 10, 11, 1, 11, 6, 30, 31, 6, 1, 5, 3, 11, 6, 3, 3, 17, 1, 61, 37, 7, 6, 2, 14, 3, 13, 1, 6, 5, 2, 62, 2, 11, 13, 2, 1, 17, 13 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

There are many regions of small numbers surrounded by large numbers. The triangle becomes dominated by very large values eventually.

LINKS

Table of n, a(n) for n=1..91.

CROSSREFS

Cf. A007913, A007947, A144909, A144910

Sequence in context: A083040 A083899 A190263 * A233431 A160650 A304092

Adjacent sequences:  A144908 A144909 A144910 * A144912 A144913 A144914

KEYWORD

easy,nonn,tabl

AUTHOR

Reikku Kulon, Sep 24 2008

STATUS

approved

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Last modified February 28 09:31 EST 2020. Contains 332323 sequences. (Running on oeis4.)