A073857 a(1) = 1, a(n) = prime obtained as a partial sum of A073856.

1, 5, 13, 29, 61, 4157, 284093, 656100284093, 20339100284093, 3676497540347069, 39705294559311037, 417030640378385569837512131773, 417030640384887681260010079421, 329539483223485065027237875106125186237

Offset

1,2

Links

Robert Israel, Table of n, a(n) for n = 1..239

Maple

B:= 1: S:= {1}: s:= 1:
for n from 2 to 20 do
  for k from 2 do
    v:= k^n;
    if member(v, S) then next fi;
    if isprime(s+v) then R:= R, v; B:= B, s+v; S:= S union {v}; s:= s+v; fi;
od od:
B; # Robert Israel, Sep 27 2024

Crossrefs

Cf. A073856.

Sequence in context: A113914 A050415 A099970 * A295112 A396622 A239367

Adjacent sequences: A073854 A073855 A073856 * A073858 A073859 A073860

Keyword

nonn

Author

Amarnath Murthy, Aug 15 2002

Extensions

More terms from R. J. Mathar, Jun 27 2007

Status

approved