A158311 a(1)=2, a(n+1) is the largest prime < 2+n^smallest digit of a(n).

2, 2, 5, 241, 5, 3121, 7, 823541, 7, 4782961, 11, 11, 13, 13, 13, 13, 17, 17, 19, 19, 19, 19, 23, 523, 577, 9765619, 23, 727, 773, 24379, 887, 27512614091, 2, 1087, 2, 1223, 37, 50651, 2, 1511, 41, 41, 43, 79493, 85159, 43, 97327, 2207, 2, 2399, 2477, 2593

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Example

2, 2 (<(2+1^2)), 5 (<(2+2^2)), 241(<(2+3^5)), 5 (<(2+4^1)).

Crossrefs

Cf. A000040, A158061.

Sequence in context: A230607 A353534 A036739 * A158061 A270546 A163119

Adjacent sequences: A158308 A158309 A158310 * A158312 A158313 A158314

Keyword

nonn,base

Author

Juri-Stepan Gerasimov, Mar 16 2009

Extensions

Examples corrected to match definition by D. S. McNeil, Dec 10 2009

Corrected and extended by D. S. McNeil, Dec 10 2009

Status

approved