1,2

Here * stands for ordinary multiplication and X means carryless (GF(2)[X]) multiplication (A048720).

Table of n, a(n) for n=1..69.

Index entries for sequences defined by congruent products between domains N and GF(2)[X]

a(2n) = 2*a(n). Bisection A115858 gives only the odd terms. Differs from A065621 for the first time at n=19, where a(19)=23, while A065621(19)=55. The next differences are a(21)=29 (A065621(21)=61) and a(23)=47 (A065621(23)=59). Cf. A115859, A115861, A115869, A115871, A115872.

Sequence in context: A222056 A247448 A102514 * A065621 A036565 A054787

Adjacent sequences: A115854 A115855 A115856 * A115858 A115859 A115860

nonn

Antti Karttunen, Feb 07 2006

approved