

A082279


a(1)=1, a(2)=2 and a(n+1) is minimal such that there are a(n1) primes strictly between a(n) and a(n+1).


3



1, 2, 4, 8, 20, 54, 152, 464, 1532, 5334, 19764, 77042, 316760, 1361630, 6129422, 28709012, 139999730, 707500404, 3705539918, 20045427240, 111972406422, 644198989898, 3815636759538, 23221092882642, 145131413157282
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OFFSET

1,2


COMMENTS

2 is the only prime in the sequence.


LINKS

Table of n, a(n) for n=1..25.


EXAMPLE

There are 4 primes (11,13,17,19) between 8 and the next term 20.


MATHEMATICA

a[1]=1; a[2]=2; a[n_] := a[n]=1+Prime[1+Sum[a[i], {i, 1, n2}]]


CROSSREFS

Cf. A082278.
Sequence in context: A089976 A000980 A123611 * A113180 A000116 A302862
Adjacent sequences: A082276 A082277 A082278 * A082280 A082281 A082282


KEYWORD

more,nonn


AUTHOR

Amarnath Murthy, Apr 13 2003


EXTENSIONS

Better description from Vladeta Jovovic, Apr 15 2003
a(24)a(25) from Chai Wah Wu, Nov 29 2019


STATUS

approved



