The On-Line Encyclopedia of Integer Sequences (OEIS)

Revisions by Harvey P. Dale (See also Harvey P. Dale's wiki page
and changes approved by Harvey P. Dale)

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A129077

Prime numbers that are the sum of consecutive prime numbers with the final digit 1 (primes in A030430).
(history; published version)

#6 by Harvey P. Dale at Fri Nov 15 18:51:53 EST 2024

STATUS

editing

approved

Discussion

Fri Nov 15

18:51

OEIS Server: Installed first b-file as b129077.txt.

#5 by Harvey P. Dale at Fri Nov 15 18:51:50 EST 2024

LINKS

Harvey P. Dale, <a href="/A129077/b129077_1.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing

#4 by Harvey P. Dale at Fri Nov 15 18:50:20 EST 2024

STATUS

editing

approved

#3 by Harvey P. Dale at Fri Nov 15 18:50:16 EST 2024

COMMENTS

Primes in the partial sums of all primes, starting with 11, that have 1 as their final digit. - Harvey P. Dale, Nov 15 2024

MATHEMATICA

Select[Accumulate[Select[Prime[Range[2000]], Mod[#, 10]==1&]], PrimeQ] (* Harvey P. Dale, Nov 15 2024 *)

STATUS

approved

editing

A298360

Numbers congruent to {3, 7, 13, 27} mod 30.
(history; published version)

#35 by Harvey P. Dale at Fri Nov 15 18:20:35 EST 2024

STATUS

editing

approved

Discussion

Fri Nov 15

18:20

OEIS Server: Installed first b-file as b298360.txt.

#34 by Harvey P. Dale at Fri Nov 15 18:20:31 EST 2024

LINKS

Harvey P. Dale, <a href="/A298360/b298360_1.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing

#33 by Harvey P. Dale at Fri Nov 15 18:18:58 EST 2024

STATUS

editing

approved

#32 by Harvey P. Dale at Fri Nov 15 18:18:55 EST 2024

MATHEMATICA

Select[Range[500], MemberQ[{3, 7, 13, 27}, Mod[#, 30]]&] (* Harvey P. Dale, Nov 15 2024 *)

STATUS

approved

editing

A372984

a(n) = floor((a(n-1)+a(n-2)+n)/(a(n-3)+1)), with a(1)=1, a(2)=3, a(3)=4.
(history; published version)

#10 by Harvey P. Dale at Fri Nov 15 17:40:42 EST 2024

STATUS

editing

approved

Discussion

Fri Nov 15

17:40

OEIS Server: Installed first b-file as b372984.txt.

#9 by Harvey P. Dale at Fri Nov 15 17:40:40 EST 2024

LINKS

Harvey P. Dale, <a href="/A372984/b372984_1.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing