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A169951 Triangle read by rows: A169950 with rows reversed. 0
1, 1, 1, 1, 2, 1, 1, 1, 5, 1, 1, 2, 4, 8, 1, 1, 1, 8, 8, 13, 1, 1, 2, 7, 18, 15, 20, 1, 1, 1, 11, 13, 45, 23, 33, 1, 1, 2, 10, 28, 36, 86, 44, 48, 1, 1, 1, 14, 18, 84, 70, 184, 64, 75, 1, 1, 2, 13, 36, 68, 188, 166, 332, 117, 100, 1, 1, 1, 17, 23, 132, 134, 482, 282, 657 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..74.

Index entries for sequences related to carryless arithmetic

FORMULA

Wanted: a recurrence. Are any of A169940-A169954 related to any other entries in the OEIS?

EXAMPLE

Triangle begins:

[1]

[1, 1]

[1, 2, 1]

[1, 1, 5, 1]

[1, 2, 4, 8, 1]

[1, 1, 8, 8, 13, 1]

[1, 2, 7, 18, 15, 20, 1]

[1, 1, 11, 13, 45, 23, 33, 1]

[1, 2, 10, 28, 36, 86, 44, 48, 1]

[1, 1, 14, 18, 84, 70, 184, 64, 75, 1]

[1, 2, 13, 36, 68, 188, 166, 332, 117, 100, 1]

[1, 1, 17, 23, 132, 134, 482, 282, 657, 173, 145, 1]

[1, 2, 16, 44, 109, 316, 396, 1000, 601, 1144, 262, 204, 1]

[1, 1, 20, 28, 187, 221, 924, 742, 2279, 1035, 2086, 374, 293, 1]

[1, 2, 19, 52, 159, 478, 749, 2090, 1895, 4460, 2077, 3434, 571, 396, 1]

[1, 1, 23, 33, 251, 327, 1561, 1469, 5403, 3463, 9441, 3397, 6047, 791, 559, 1]

...

CROSSREFS

Related to thickness: A169940-A169954, A061909.

Sequence in context: A290771 A014651 A275422 * A174453 A082063 A260148

Adjacent sequences:  A169948 A169949 A169950 * A169952 A169953 A169954

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Aug 01 2010

STATUS

approved

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Last modified July 10 15:20 EDT 2020. Contains 335576 sequences. (Running on oeis4.)