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A144307 Triangle read by rows: prime numbers p(n) along left edge (n, 1) and p(n - 1) along right edge (n, n), with (n, k) = rad((n - 1, k - 1) + (n - 1, k)) for 1 < k < n when n > 2. 0
2, 3, 2, 5, 5, 3, 7, 10, 2, 5, 11, 17, 6, 7, 7, 13, 14, 23, 13, 14, 11, 17, 3, 37, 6, 3, 5, 13, 19, 10, 10, 43, 3, 2, 6, 17, 23, 29, 10, 53, 46, 5, 2, 23, 19, 29, 26, 39, 21, 33, 51, 7, 5, 42, 23, 31, 55, 65, 30, 6, 42, 58, 6, 47, 65, 29, 37, 86, 30, 95, 6, 6, 10, 2, 53, 14, 94, 31 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Large clusters of twos occur periodically along interior diagonals. The final two in the terms given begins one such cluster.

LINKS

Table of n, a(n) for n=1..78.

CROSSREFS

Cf. A000040, A007947

Sequence in context: A125179 A141821 A144308 * A144310 A240858 A035361

Adjacent sequences:  A144304 A144305 A144306 * A144308 A144309 A144310

KEYWORD

easy,nonn,tabl

AUTHOR

Reikku Kulon, Sep 17 2008

STATUS

approved

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Last modified February 21 04:18 EST 2019. Contains 320371 sequences. (Running on oeis4.)