[seqfan] Any digit-pair in S sums to a prime

[Eric Angelini]

Hello SeqFans,
Any digit-pair in S sums to a prime, commas or not:

S=1,2,3,4,7,6,5,8,9,20,21,11,12,14,16,50,23,25,29,41,43,47,49,83,85,61,65,
67,411,111,112,30,32,34,38,52,56,58,92,94,70,74,76,114,98,302,116,120,202,121,
123,89,203,...

S is supposed not to show twice the same
integer, and S wants to be the lexicofirst such seq.

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The same seq with prime absolute
differences between digits is perhaps T:

T=1,3,5,2,4,6,8,13,14,7,9,20,24,16,18,30,25,27,29,41,31,35,36,38,50,52,42,46,
47,49,61,63,53,57,58,64,68,69,70,72,74,75,79,202,92,94,96,81,83,85,86,97,
203,130,205,207,241,302,413,131,...

Best,
É.
Propulsé d'un aPhone