cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

User: Tomáš Brada

Tomáš Brada's wiki page.

Tomáš Brada has authored 7 sequences.

A333977 Prime starting a sequence of 20 consecutive primes with symmetrical gaps about the center.

Original entry on oeis.org

1797595814863, 2375065608481, 4465545586753, 21818228348093, 67696772430071, 82116093014611, 155947272322087, 161980267642951, 169560139541641, 202619277419161, 285719200081877, 299828814652799, 314942862282899, 365706921997577
Offset: 1

Author

Tomáš Brada, Sep 20 2020

Keywords

Formula

Primes p = prime(k) = A000040(k) such that A359440(k+9) >= 9. - Peter Munn, Jan 09 2023

A336968 Prime starting a sequence of 22 consecutive primes with symmetrical gaps about the center.

Original entry on oeis.org

633925574060671, 2235053194261739, 3693434256575461, 6244996197964523, 7312449941282693, 11768508587048027, 12241378636561883, 12696156429346387, 13388148635660387, 14052415423668901, 18620445306703861, 19802687937976219, 22930603692243341, 23122811970297833
Offset: 1

Author

Tomáš Brada, Aug 09 2020

Keywords

Formula

Primes p = prime(k) = A000040(k) such that A359440(k+10) >= 10. - Peter Munn, Jan 09 2023

A336967 Prime starting a sequence of 24 consecutive primes with symmetrical gaps about the center.

Original entry on oeis.org

22930603692243271, 34984922852185283, 60960572612579749, 226721453950385059, 301850075265898823, 310402815525745511, 341206644560627711, 357582484287837103, 481408770994035947, 492720459594614777, 528050771271601307, 587950582712698157, 675424273001524577
Offset: 1

Author

Tomáš Brada, Aug 09 2020

Keywords

Formula

Primes p = prime(k) = A000040(k) such that A359440(k+11) >= 11. - Peter Munn, Jan 09 2023

A336966 Primes starting 10-tuples of consecutive primes that have symmetrical gaps about their mean and form 5 pairs of twin primes.

Original entry on oeis.org

3031329797, 5188151387, 14168924459, 14768184029, 18028534367, 26697800819, 26919220961, 29205326387, 32544026699, 39713433671, 45898528799, 48263504459, 50791655009, 66419473031, 71525244611, 80179195037, 83700877199, 86767580069, 97660776137, 108116163479
Offset: 1

Author

Tomáš Brada, Aug 09 2020

Keywords

Examples

			a(1) = A274792(5) = 3031329797 starts a 10-tuple of consecutive primes: 3031329797+s for s in {0, 2, 12, 14, 42, 44, 72, 74, 84, 86} that are symmetric about 3031329797+43 and form 5 pairs of twin primes.
		

A335395 Start of a string of exactly 10 consecutive (but disjoint) pairs of twin primes.

Original entry on oeis.org

3324648277099157, 31910610414019031, 55016223757181177, 58714524586913549, 124129161487792607, 177564738317068181, 191369558592252011, 199330124393114021, 314398595062088219
Offset: 1

Author

Tomáš Brada, Jun 05 2020

Keywords

Examples

			a(1) = A087641(10) = 3324648277099157, 3324648277099157 + s where s = {0, 2, 54, 56, 72, 74, 84, 86, 150, 152, 162, 164, 180, 182, 240, 242, 264, 266, 294, 296} are prime.
		

Crossrefs

A335044 Primes starting 14-tuples of consecutive primes that have symmetrical gaps about their mean and form 7 pairs of twin primes.

Original entry on oeis.org

1855418882807417, 2485390773085247, 4038284355308309, 14953912258447817, 16152884167551797, 20149877129714999, 23535061700758967, 24067519779525107, 25892136591156917, 28681238268465371, 29359755788438639, 38364690814563809, 52367733685120277
Offset: 1

Author

Tomáš Brada, Jun 05 2020

Keywords

Examples

			a(1) = A274792(7) = 1855418882807417 starts a 14-tuple of consecutive primes: 1855418882807417+s for s in {0 2 12 14 30 32 72 74 114 116 132 134 144 146} that are symmetric about 1855418882807417+73 and form 7 pairs of twin primes.
		

A335394 Primes starting 16-tuples of consecutive primes that have symmetrical gaps about their mean and form 8 pairs of twin primes.

Original entry on oeis.org

2640138520272677, 119890755200639999, 156961225134536189, 193609877401516181, 215315384130681929, 404072710417411769, 517426190585100089, 519460320704755811
Offset: 1

Author

Keywords

Examples

			a(1) = A274792(8) = 2640138520272677 starts a 16-tuple of consecutive primes: 2640138520272677+s for s in {0, 2, 12, 14, 30, 32, 54, 56, 90, 92, 114, 116, 132, 134, 144, 146} that are symmetric about 2640138520272677+73 and form 8 pairs of twin primes.