A270072 Decimal representation of the n-th iteration of the Conway’s game of life starting with four adjacent rows of lines turned on to positive and negative infinity.

15, 33, 231, 561, 3735, 8673, 58407, 146673, 951831, 2200161, 15007527, 37618161, 243401751, 562961505, 3835839783, 9654230001, 62277025815, 1438881404513, 981400027431, 2471753680881, 15945066090519, 38848671944801, 251274914238759, 633024492828657, 4081389310836759, 589338770407521, 6431706870343299, 161989104772314217, 1044976403211096087

Offset

0,1

Comments

It is conjectured that every term has a prime factor that does not divide any previous term.

Links

Table of n, a(n) for n=0..28.

Example

0th iteration = 1111 = 15, 1st iteration = 100001 = 33, 2nd iteration = 11100111 = 231, 3rd iteration = 1000110001 = 561, 4th iteration = 111010010111 = 3735, 5th iteration = 10000111100001 = 8673, ... .

Crossrefs

Sequence in context: A190052 A242243 A219855 * A085803 A168573 A139578

Adjacent sequences: A270069 A270070 A270071 * A270073 A270074 A270075

Keyword

nonn

Author

Brook Estifanos, Mar 09 2016

Status

approved