[seqfan] Re: New SEQs: Squares of primes with neighbor semiprimes.

Zak Seidov zakseidov at mail.ru
Thu Mar 2 15:51:51 CET 2017


Vlad,
 you (and everybody) are welcome to submit.
 
>Dear Zak, 
>
>I like the following sequences for k=1,2,..:.(not in OEIS).
>Smallest b-a such that a<prime(n)^k<b, where a,b
>are semiprimes.
>
>k=1) n>=3: 2,3,4,4,6,6,4,7,7,...
>
>k=2) n>=2( 0 is not semiprime):
>4,4,5,3,11,4,4,6,4,..(close to yours).
>
>K=3) n>=1:3,7,6,5,4,4,4,...
>
>Best regards,
>Vladimir
>________________________________________
>From: SeqFan [seqfan-bounces at list.seqfan.eu] on behalf of Zak  Seidov [zakseidov at mail.ru]
>Sent: 02 March 2017 10:33
>To: Sequence Fanatics Discussion list
>Subject: [seqfan] New SEQs: Squares of primes with neighbor semiprimes.
>
>Several related sequences are apparently not in OEIS.
>Worth submitting? Anyone cares?
>
>Primes squared with neighbor semiprimes.
>{0, 4, 6}, {6, 9, 10}, {22, 25, 26}, {46, 49, 51}, {119, 121, 122},
>{166, 169, 177}, {287, 289, 291}, {358, 361, 362},
>{527, 529, 533}, {838, 841, 842},...
>
>--
>Zak  Seidov
>
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>Seqfan Mailing list -  http://list.seqfan.eu/
>
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