A144308 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) = core((n - 1, k - 1) + (n - 1, k)) for 1 < k < n when n > 2.

2, 3, 2, 5, 5, 3, 7, 10, 2, 5, 11, 17, 3, 7, 7, 13, 7, 5, 10, 14, 11, 17, 5, 3, 15, 6, 1, 13, 19, 22, 2, 2, 21, 7, 14, 17, 23, 41, 6, 1, 23, 7, 21, 31, 19, 29, 1, 47, 7, 6, 30, 7, 13, 2, 23, 31, 30, 3, 6, 13, 1, 37, 5, 15, 1, 29, 37, 61, 33, 1, 19, 14, 38, 42, 5, 1, 30, 31

Offset

1,1

Comments

Large clusters of small integers occur periodically.

Links

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

Crossrefs

Cf. A000040, A007913

Sequence in context: A135737 A125179 A141821 * A144307 A144310 A330049

Adjacent sequences: A144305 A144306 A144307 * A144309 A144310 A144311

Keyword

easy,nonn,tabl

Author

Reikku Kulon, Sep 17 2008

Status

approved