A123809
Number of ways to build a contiguous building with n LEGO blocks of size 1 X 7 on top of a fixed block of the same size so that the building is flat, i.e., with all blocks in parallel position and symmetric after a rotation by 180 degrees.
Original entry on oeis.org
1, 4, 7, 34, 85, 461, 1175, 6871, 18807, 112406, 318571, 1936113, 5653062, 34848639, 103771770, 645701202, 1955873614
Offset: 1
A123810
Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 8.
Original entry on oeis.org
1, 40, 5425, 853908, 147609509, 27054419032
Offset: 1
A123811
Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 8 which is symmetric after a rotation by 180 degrees.
Original entry on oeis.org
1, 1, 73, 893, 11257, 167129, 1969619
Offset: 1
A123812
Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 8 which is flat, i.e., with all blocks in parallel position.
Original entry on oeis.org
1, 8, 145, 2884, 62517, 1404472, 32430749, 763219988, 18231473349
Offset: 1
A123813
Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1 X 8 which is flat, i.e., with all blocks in parallel position, and symmetric after a rotation by 180 degrees.
Original entry on oeis.org
1, 1, 9, 13, 153, 249, 3011, 5209, 63991, 114321, 1421173, 2603433, 32518012, 60650817, 760402013, 1437977218
Offset: 1
A123814
Number of ways to build a contiguous building with n LEGO blocks of size 1 X 8 on top of a fixed block of the same size.
Original entry on oeis.org
79, 8509, 1273567, 211300931, 37827088513
Offset: 1
A123815
Number of ways to build a contiguous building with n LEGO blocks of size 1 X 8 on top of a fixed block of the same size so that the building is symmetric after a rotation by 180 degrees.
Original entry on oeis.org
1, 37, 73, 2995, 9235, 404559, 1360441
Offset: 1
A123816
Number of ways to build a contiguous building with n LEGO blocks of size 1 X 8 on top of a fixed block of the same size so that the building is flat, i.e., with all blocks in parallel position.
Original entry on oeis.org
15, 253, 5055, 106387, 2364993, 53883047, 1258407303, 29843705355
Offset: 1
A123817
Number of ways to build a contiguous building with n LEGO blocks of size 1 X 8 on top of a fixed block of the same size so that the building is flat, i.e., with all blocks in parallel position and symmetric after a rotation by 180 degrees.
Original entry on oeis.org
1, 5, 9, 51, 131, 807, 2129, 13967, 39701, 265152, 781478, 5287858, 16094282, 110147280, 342365511, 2360643691
Offset: 1
A123818
Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 2 X 2.
Original entry on oeis.org
1, 3, 31, 412, 6435, 106108, 1825803, 32320892, 584956651, 10772558067, 201219520632
Offset: 1
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