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A139459 Triangle read by rows: ConvOffsStoT transform of the dodecahedral numbers A006560 starting (1, 20, 84, 220,...). +0
2
1, 1, 1, 1, 20, 1, 1, 84, 84, 1, 1, 220, 924, 220, 1, 1, 455, 5005, 5005, 455, 1, 1, 816, 18564, 48620, 18564, 816, 1, 1, 1330, 54264, 293930, 293930, 54264, 1330, 1 (list; table; graph; listen)
OFFSET

1,5

COMMENT

Row sums = A007613(n-1): (1, 2, 22, 170, 1366, 10922, 87382,...).

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

1, 20, 1;

1, 84, 84, 1;

1, 220, 924, 220, 1;

1, 455, 5005, 5005, 455, 1;

1, 816, 18564, 48620, 18564, 816, 1;

..

Row 5 = (1, 220, 924, 220, 1) = ConfOffs transform of (1, 20, 84, 220); where A006560 = (0, 1, 20, 84, 220, 455,...).

CROSSREFS

Cf. A006560, A007613.

Adjacent sequences: A139456 A139457 A139458 this_sequence A139460 A139461 A139462

Sequence in context: A040402 A040401 A040400 this_sequence A022183 A015146 A064033

KEYWORD

nonn,tabl,new

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Apr 22 2008

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.


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