login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

a(n) = core(A143176(n)).
1

%I #11 Feb 10 2024 03:59:42

%S 1,2,6,3,30,1,21,30,5,15,165,5,390,35,105,5,170,35,3990,70,105,770,

%T 805,2310,154,1365,21,77,22330,385,434,1155,5005,39270,10010,15015,

%U 14245,1463,30030,5005,6314,15015,215215,1001,30030,230230,705705,3003,429,6006,85085,34034,795795,51051,17017,510510,114114,29029

%N a(n) = core(A143176(n)).

%H Amiram Eldar, <a href="/A144362/b144362.txt">Table of n, a(n) for n = 1..89</a>

%Y Cf. A002110, A007913, A143176, A144361.

%K nonn

%O 1,2

%A _Reikku Kulon_, Sep 18 2008

%E a(2) corrected by _Reikku Kulon_, Sep 19 2008

%E More terms from _Max Alekseyev_, Feb 17 2011