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1,2

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

Table of n, a(n) for n=1..83.

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

Cf. A115857, A115871. Transpose: A114388. First column: A115873. Rows at positions 2^k are A000027. Row at the position 2n is equal to the row at position n. Some odd-positioned rows: row 1: A000027, Row 3: A048717, Row 5: A115770 (? Checked for all values less than 2^20), Row 7: A115770, Row 9: A115801, Row 11: A115803, Row 13: A115772, Row 15: A115801 (? Checked for all values less than 2^20), Row 17: A115809, Row 19: A115874, Row 49: A114384, Row 57: A114386.

Sequence in context: A201592 A234361 A240450 * A133926 A144337 A143929

Adjacent sequences: A115869 A115870 A115871 * A115873 A115874 A115875

nonn,tabl

Antti Karttunen, Feb 07 2006

approved