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A156672 a(1)=2, a(n+1) is the smallest prime >= a(n) + sum of digits of a(n). 2
2, 5, 11, 13, 17, 29, 41, 47, 59, 73, 83, 97, 113, 127, 137, 149, 163, 173, 191, 211, 223, 233, 241, 251, 263, 277, 293, 307, 317, 331, 347, 367, 383, 397, 419, 433, 443, 457, 479, 499, 521, 541, 557, 577, 599, 631, 641, 653, 673, 691, 709, 727, 743, 757, 787 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Heuristically, a(n) ~ kn log n for some k >= 4.5/log 10.

LINKS

Table of n, a(n) for n=1..55.

EXAMPLE

2, 5(>4=2+2), 11(>10>5+5), 13(=13=11+1+1), 17(=17=13+1+3), 29(>25=17+1+7), etc.

CROSSREFS

Cf. A156604.

Sequence in context: A019387 A019337 A086518 * A145669 A215427 A139019

Adjacent sequences:  A156669 A156670 A156671 * A156673 A156674 A156675

KEYWORD

nonn,base,less

AUTHOR

Juri-Stepan Gerasimov, Feb 13 2009

EXTENSIONS

Corrected by Charles R Greathouse IV, Mar 19 2010

STATUS

approved

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Last modified October 19 16:17 EDT 2019. Contains 328223 sequences. (Running on oeis4.)