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A120724 A prime gap as sum of integers triangular array. 0
2, 3, 5, 5, 7, 11, 7, 9, 13, 11, 13, 17, 23, 13, 15, 19, 25, 17, 19, 23, 29, 37, 19, 21, 25, 31, 39, 23, 25, 29, 35, 43, 29, 31, 35, 41, 49 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..37.

FORMULA

a(n,m) = Prime[m] + 2*Sum[i, {i, 1, n}]

EXAMPLE

2

3, 5

5, 7, 11

7, 9, 13

11, 13, 17, 23

13, 15, 19, 25

17, 19, 23, 29, 37

19, 21, 25, 31, 39

23, 25, 29, 35, 43

29, 31, 35, 41, 49

MATHEMATICA

t[n_, m_] := Prime[m] + 2*Sum[i, {i, 1, n}] a = Table[Table[t[n, m], {n, 0, PrimePi[m]}], {m, 1, 10}] Flatten[a]

CROSSREFS

Sequence in context: A332286 A156898 A084754 * A117530 A238256 A239277

Adjacent sequences:  A120721 A120722 A120723 * A120725 A120726 A120727

KEYWORD

nonn,uned,tabf

AUTHOR

Roger L. Bagula, Aug 18 2006

STATUS

approved

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Last modified November 29 12:24 EST 2021. Contains 349416 sequences. (Running on oeis4.)