A036339 Concatenation of prime p and nextprime(p) is prime -> cycles of 2 steps possible.

467, 941, 13681, 14461, 21787, 22171, 22369, 24049, 24151, 25457, 29333, 37397, 41221, 42467, 43481, 46511, 48023, 54133, 56681, 68699, 75883, 85081, 101341, 103511, 117443, 120193, 126199, 137363, 144323, 145133, 158791, 175853, 181891, 183797

Offset

1,1

Links

Table of n, a(n) for n=1..34.

C. Rivera, Details of procedure

Crossrefs

Cf. A030459, A034592, A036340, A036341.

Sequence in context: A249986 A273808 A034593 * A036340 A059395 A266163

Adjacent sequences: A036336 A036337 A036338 * A036340 A036341 A036342

Keyword

nonn,base

Author

Patrick De Geest, Dec 15 1998

Extensions

Offset corrected and missing 181891 inserted by Sean A. Irvine, Oct 26 2020

Status

approved