[seqfan] A019278 and A257670

[michel.marcus at free.fr]

Hello Seqfans 


I am trying to compute sequence a(n) = A257670(A019278(n)) for the b-file terms of A019278. 


For the moment, I get: 1, 2, 2, 2, 2, 16, 21, 2, 19, 2, 64, 43, 81, 2, 73, 29, 2, 33, 361, 81, 361, 27, 189, 189, 1029, 189, 2133, 3137, 786, 1348, 189, 786, 6730, 28927, 5, 10308, 57337, 12873, 786, 6730, 17593, 786, 343976, 28927, 291848, 33412, 22521, 786, 21657, 185897, 43856, 937, 884709, ... 


But this is taking more and more time. 
Do you have an idea about how to speed things there ? 
Thanks and regards. 


MM