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A103835 Smallest prime p, larger than previous term, such that concatenation of n and p is a prime. 0
3, 11, 13, 19, 23, 31, 43, 53, 67, 97, 113, 149, 151, 173, 193, 223, 239, 251, 373, 389, 397, 409, 431, 439, 457, 479, 487, 499, 569, 577, 601, 647, 739, 757, 797, 809, 811, 821, 827, 829, 863, 929, 991, 1109, 1181, 1297, 1301, 1303, 1327, 1367, 1409, 1429 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Cf. A096915

EXAMPLE

a(10)=97 because 1097 is prime, while 1071,1073,1079,1083,1089 are all composite.

CROSSREFS

Cf. A096915.

Sequence in context: A050583 A045428 A191049 * A067386 A063621 A176870

Adjacent sequences:  A103832 A103833 A103834 * A103836 A103837 A103838

KEYWORD

nonn,base

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Mar 30 2005

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Last modified February 16 17:48 EST 2012. Contains 205939 sequences.