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A272172 Triangle read by rows: T(n,k) in which row n lists the first n terms of A000203 in reverse order. 1
1, 3, 1, 4, 3, 1, 7, 4, 3, 1, 6, 7, 4, 3, 1, 12, 6, 7, 4, 3, 1, 8, 12, 6, 7, 4, 3, 1, 15, 8, 12, 6, 7, 4, 3, 1, 13, 15, 8, 12, 6, 7, 4, 3, 1, 18, 13, 15, 8, 12, 6, 7, 4, 3, 1, 12, 18, 13, 15, 8, 12, 6, 7, 4, 3, 1, 28, 12, 18, 13, 15, 8, 12, 6, 7, 4, 3, 1, 14, 28, 12, 18, 13, 15, 8, 12, 6, 7, 4, 3, 1, 24, 14, 28 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..94.

FORMULA

a(n) = A000203(A004736(n)).

T(n,k) = A000203(n-k+1).

EXAMPLE

Triangle begins:

1;

3,   1;

4,   3,  1;

7,   4,  3,  1;

6,   7,  4,  3,  1;

12,  6,  7,  4,  3,  1;

8,  12,  6,  7,  4,  3,  1;

15,  8, 12,  6,  7,  4,  3,  1;

13, 15,  8, 12,  6,  7,  4,  3,  1;

18, 13, 15,  8, 12,  6,  7,  4,  3,  1;

12, 18, 13, 15,  8, 12,  6,  7,  4,  3,  1;

28, 12, 18, 13, 15,  8, 12,  6,  7,  4,  3,  1;

...

CROSSREFS

Mirror of A245093.

Column k gives A000203 starting in row k.

Row sums give A024916.

Cf. A004736, A104887, A272171.

Sequence in context: A104568 A030758 A322103 * A104764 A152842 A307280

Adjacent sequences:  A272169 A272170 A272171 * A272173 A272174 A272175

KEYWORD

nonn,tabl

AUTHOR

Omar E. Pol, Apr 21 2016

STATUS

approved

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Last modified May 27 21:52 EDT 2020. Contains 334671 sequences. (Running on oeis4.)