OFFSET
1,1
COMMENTS
In range n=1..2215, each a(n) is a multiple of 41, with a(2215) = 177079 = 4319*41. In that range, all 2160 odd multiples 1, 3, 5, ..., 4319*41 occur, but only 55 even multiples, with a(34) = 66*41 = 2706 being the first one of them. The multipliers for even terms in that range seems to be given by 66*A047253(1..55) from 66*1 up to 66*A047253(55) = 66*65 = 4290. (Where A047253 gives the numbers not divisible by six).
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..10007
PROG
(Scheme, with memoizing definec-macro from Antti Karttunen's IntSeq-library)
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Nov 18 2013
STATUS
approved