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A132178 Triangle read by rows: T(n,m) is the number of cyclic permutations of [n] in which m of successive numbers add to a prime. 0<=m<=n, read by rows n>=0. 0
0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 2, 0, 1, 0, 2, 4, 4, 2, 0, 1, 6, 19, 16, 15, 2, 1, 6, 36, 84, 108, 90, 24, 12, 0, 44, 230, 542, 722, 602, 266, 98, 14, 2, 208, 1284, 3478, 5272, 5202, 3004, 1378, 264, 70, 0, 912, 6856, 21784, 39496, 46816, 35680, 20824, 6616, 2224, 184, 48 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,13

COMMENTS

The last entry of the (2n)th row is A051252(n). Row sums are apparently in A001710(n-1).

LINKS

Table of n, a(n) for n=0..65.

EXAMPLE

The triangle starts

n|

0| 0

1| 0 1

2| 0 0 1

3| 0 0 1 0

4| 0 0 2 0 1

5| 0 2 4 4 2 0

6| 1 6 19 16 15 2 1

7| 6 36 84 108 90 24 12 0

8| 44 230 542 722 602 266 98 14 2

9| 208 1284 3478 5272 5202 3004 1378 264 70 0

10| 912 6856 21784 39496 46816 35680 20824 6616 2224 184 48

11| 8016 58232 188160 358080 449424 380592 237888 95280 32880 4776 1072 0

12| 61952 465472 1597312 3298432 4563264 4406592 3152064 1578816 641088 151936 38336 2624 512

CROSSREFS

Sequence in context: A030010 A321297 A163577 * A039655 A103775 A331594

Adjacent sequences:  A132175 A132176 A132177 * A132179 A132180 A132181

KEYWORD

nonn,tabl

AUTHOR

R. J. Mathar, Nov 04 2007

STATUS

approved

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