A354486 - OEIS

A354486

Triangle read by rows: T(n,k) is the numerator of the n-th term of the Somos-k sequence, 4 <= k <= n.

2, 3, 2, 7, 3, 3, 23, 5, 5, 3, 59, 11, 9, 5, 4, 314, 37, 23, 9, 7, 4, 1529, 83, 75, 17, 13, 7, 5, 8209, 274, 421, 41, 25, 13, 9, 5, 83313, 1217, 1103, 137, 61, 25, 17, 9, 6, 620297, 6161, 5047, 769, 187, 49, 33, 17, 11, 6

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

4,1

LINKS

Pontus von Brömssen, Rows n = 4..36, flattened

Eric Weisstein's World of Mathematics, Somos Sequence

Wikipedia, Somos sequence

EXAMPLE

Triangle begins:

n\k| 4 5 6 7 8 9 10 11 12

---+-----------------------------------

4 | 2

5 | 3 2

6 | 7 3 3

7 | 23 5 5 3

8 | 59 11 9 5 4

9 | 314 37 23 9 7 4

10 | 1529 83 75 17 13 7 5

11 | 8209 274 421 41 25 13 9 5

12 | 83313 1217 1103 137 61 25 17 9 6

CROSSREFS

Cf. A354487 (denominators).

Columns 4-7 are A006720-A006723 (without the initial 1's).

Sequence in context: A333986 A349664 A266258 * A180916 A319374 A205687

Adjacent sequences: A354483 A354484 A354485 * A354487 A354488 A354489

KEYWORD

nonn,tabl,frac

AUTHOR

Pontus von Brömssen, May 28 2022

STATUS

approved