[seqfan] Primes with digits sum 2^k, A068807 and A178796
Richard Mathar
mathar at strw.leidenuniv.nl
Mon Jul 5 13:31:30 CEST 2010
Are these two sequences related to prime chains with digit sums the same:
http://oeis.org/classic/?q=id:A178796|id:A068807
2,11,13,17,31,53,71,79,97,101,103,107,211,233,251,277,349,367,431,439,457,503,521,547,619,673,691,701,709,727,853,907,1021,1061,1069,1087,1151,1201,1223,1249,1429,1447,1483,1511,1601,1609,1627,1663,1753,1861,1933,1951,
2,11,13,17,31,53,71,79,97,101,103,107,211,233,251,277,349,367,431,439,457,503,521,547,619,673,691,701,709,727,853,907,1021,1061,1069,1087,1151,1201,1223,1249,1429,1447,1483,1511,1601,1609,1627,1663,1753,1861,
That is: is there a chance that demanding divisibility of digits sums of
adjacent terms in A178796 ever involves a factor >=3 ?
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