A144910 Triangle read by rows: rad(n) along left edge (n, 1) and core(n) along right edge (n, n), with (n, k) = rad((n - 1, k - 1) + (n - 1, k)) for 1 < k < n when n > 2.

1, 2, 2, 3, 2, 3, 2, 5, 5, 1, 5, 7, 10, 6, 5, 6, 6, 17, 2, 11, 6, 7, 6, 23, 19, 13, 17, 7, 2, 13, 29, 42, 2, 30, 6, 2, 3, 15, 42, 71, 22, 2, 6, 2, 1, 10, 6, 57, 113, 93, 6, 2, 2, 3, 10, 11, 2, 21, 170, 206, 33, 2, 2, 5, 13, 11, 6, 13, 23, 191, 94, 239, 35, 2, 7, 6, 6, 3

Offset

1,2

Links

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

Crossrefs

Cf. A007913, A007947, A144909

Sequence in context: A165916 A096013 A072380 * A080330 A342905 A356741

Adjacent sequences: A144907 A144908 A144909 * A144911 A144912 A144913

Keyword

easy,nonn,tabl

Author

Reikku Kulon, Sep 24 2008

Status

approved